#B23F21#B23F21
#B23F21 is a mid, vivid red. Relative luminance 0.131; OKLCH L 52.5% C 0.156 H 35.4°. Best body text is #FFFFFF at 5.79:1 contrast (WCAG AA passes).
Color values
| HEX | #B23F21 |
|---|---|
| RGB | rgb(178, 63, 33) |
| HSL | hsl(12, 69%, 41%) |
| HSV | hsv(12, 81%, 70%) |
| CMYK | cmyk(0%, 64.6%, 81.5%, 30.2%) |
| CIE-LAB | lab(42.96, 45.29, 41.94) |
| CIE-LCH | lch(42.96, 61.72, 42.80°) |
| OKLab | oklab(52.55% 0.127 0.0902) |
| OKLCH | oklch(52.55% 0.156 35.4) |
| XYZ | xyz(20.4144, 13.1328, 2.8985) |
| Luminance | 0.1313 (WCAG relative) |
| Temperature | warm |
| Family | red |
Closest named colors
Rusty Red
#AF2F0D
ΔE00 3.43
Rust
#B7410E
ΔE00 4.19
Rust (survey)
#A83C09
ΔE00 4.82
Brick
#A03623
ΔE00 5.03
Rust Red
#AA2704
ΔE00 5.13
Brownish Red
#9E3623
ΔE00 5.35
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#B23F21 #2194B2
analogous
#B2214C #B23F21 #B28821
triadic
#B23F21 #21B23F #3F21B2
tetradic
#B23F21 #4CB221 #2194B2 #8821B2
square
#B23F21 #4CB221 #2194B2 #8821B2
split-complementary
#B23F21 #21B288 #214CB2
monochromatic
#4B1A0E #7E2D17 #B23F21 #DA5836 #E3836A
Accessibility & contrast
On white
5.79
#B23F21 on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.63
#B23F21 on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #B23F21
5.79:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##B23F21 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##B23F21 | 1.00 | 5.79 | 3.63 | 5.79 |
| #FFFFFF | 5.79 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.63 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 5.79 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#60551C
Deuteranopia (green-blind)
#7C6F1C
Tritanopia (blue-blind)
#C41F39
Achromatopsia (no color)
#656565
Design tokens & code
CSS
--color: #b23f21; /* rgb */ color: rgb(178, 63, 33); /* oklch */ color: oklch(52.5% 0.156 35.4);
Tailwind
colors: {
custom: {
50: '#d1795f',
500: '#b23f21',
950: '#000000',
},
}SCSS
$custom: #b23f21; $custom-light: #d1795f; $custom-dark: #000000;
JSON
{
"hex": "#b23f21",
"rgb": {
"r": 178,
"g": 63,
"b": 33
},
"hsl": {
"h": 12.414,
"s": 68.72,
"l": 41.373
},
"oklch": {
"l": 0.5255,
"c": 0.15577,
"h": 35.4
},
"luminance": 0.1313
}Semantic roles & 50–950 ramp
primary
#B23F21
secondary
#66B5C9
accent
#C7EC3C
background
#FEF7F5
surface
#FCEEE9
border
#D5C9C5
text
#160905
muted
#847B79