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Pixeliro

#B91C1C

Fire Brick

#B91C1CFire Brick

Luminance

0.112

Category

Red

Type

Dark

Best On

#FFFFFF

Color Codes

All color formats for your project

HEX

HEX
#B91C1C
No #
B91C1C

RGB

RGB
rgb(185, 28, 28)
Values
R:185 G:28 B:28

HSL

HSL
hsl(0, 74%, 42%)
Values
H:0° S:74% L:42%

HSV / HSB

HSV
hsv(0, 85%, 73%)
Values
H:0° S:85% V:73%

CMYK

CMYK
cmyk(0%, 85%, 85%, 27%)
Values
C:0 M:85 Y:85 K:27

LAB

LAB
lab(40, 59, 42)
Values
L:40 a:59 b:42

OKLCH

OKLCH
oklch(50.5% 0.190 27.5)
Values
L:50.5% C:0.190 H:27.5°

Code Formats

CSS
color: #B91C1C;
Swift
UIColor(red: 0.725, green: 0.110, blue: 0.110, alpha: 1.0)
Kotlin
Color(0xFFB91C1C)
Flutter
Color(0xFFB91C1C)
Android
#FFB91C1C

Contrast Analysis

WCAG compliance with grayscale colors

On White

6.47:1

AA

On Black

3.25:1

AA-large

Grayscale Contrast

Aa

0%

3.2

AA-large
Aa

10%

2.7

Fail
Aa

20%

2.0

Fail
Aa

30%

1.3

Fail
Aa

40%

1.1

Fail
Aa

50%

1.6

Fail
Aa

60%

2.3

Fail
Aa

70%

3.1

AA-large
Aa

80%

4.0

AA-large
Aa

90%

5.1

AA
Aa

100%

6.5

AA

Best Grayscale Contrast

#FFFFFF with ratio 6.47:1

Aa

Color Harmonies

Harmonious color combinations

complementary

Two colors opposite on the color wheel (180°)

split-complementary

Base color + two colors adjacent to its complement

triadic

Three colors evenly spaced (120° apart)

tetradic

Four colors evenly spaced (90° apart)

analogous

Three colors adjacent on the color wheel (30° apart)

Color Variations

Tints, shades, tones, and full scale

Color Scale (50-900)

50

100

200

300

400

500

600

700

800

900

Tints (Lighter)

Shades (Darker)

Tones (Desaturated)

Gradients (OKLCH)

Primary

90°
CSS
linear-gradient(90deg, #E65656 0%, #6F1111 100%)
OKLCH
linear-gradient(90deg, oklch(64.4% 0.179 23.6) 0%, oklch(35.2% 0.128 26.9) 100%)
Stops
0%
100%

Vibrant

135°
CSS
linear-gradient(135deg, #F21818 0%, #CB0101 100%)
OKLCH
linear-gradient(135deg, oklch(61.0% 0.241 28.4) 0%, oklch(52.9% 0.217 29.2) 100%)
Stops
0%
100%

Complementary

90°
CSS
linear-gradient(90deg, #B91C1C 0%, #1CBABA 100%)
OKLCH
linear-gradient(90deg, oklch(50.5% 0.190 27.5) 0%, oklch(71.6% 0.118 194.8) 100%)
Stops
0%
100%

Analogous

90°
CSS
linear-gradient(90deg, #BA1C6B 0%, #B91C1C 50%, #BA6B1C 100%)
OKLCH
linear-gradient(90deg, oklch(52.4% 0.198 357.3) 0%, oklch(50.5% 0.190 27.5) 50%, oklch(60.4% 0.132 59.3) 100%)
Stops
0%
50%
100%

Sunset

90°
CSS
linear-gradient(90deg, #F6CE55 0%, #EE6C2B 50%, #E6193C 100%)
OKLCH
linear-gradient(90deg, oklch(86.4% 0.144 90.6) 0%, oklch(68.0% 0.177 43.8) 50%, oklch(59.1% 0.228 21.2) 100%)
Stops
0%
50%
100%

Ocean

135°
CSS
linear-gradient(135deg, #19A1E6 0%, #22C3B6 50%, #47D1A3 100%)
OKLCH
linear-gradient(135deg, oklch(67.5% 0.146 238.9) 0%, oklch(73.8% 0.124 186.2) 50%, oklch(77.5% 0.136 166.9) 100%)
Stops
0%
50%
100%

Dark Mode

180°
CSS
linear-gradient(180deg, #BA1C1C 0%, #2C1111 100%)
OKLCH
linear-gradient(180deg, oklch(50.7% 0.191 27.5) 0%, oklch(21.9% 0.045 21.4) 100%)
Stops
0%
100%

Radial Glow

Radial
CSS
radial-gradient(circle, #E24040 0%, #851414 100%)
OKLCH
radial-gradient(circle, oklch(61.1% 0.199 25.3) 0%, oklch(39.9% 0.147 27.2) 100%)
Stops
0%
100%

💡 About OKLCH Gradients

OKLCH (Oklch Color Space) provides perceptually uniform gradients with better color transitions than traditional RGB/HSL gradients. The format is oklch(L% C H) where L = Lightness (0-100%), C = Chroma (0-0.4), H = Hue (0-360°).

Generate Full Palette

Create a complete brand palette from this color with primary, secondary, accent, and neutral scales.

View Palette