#B33F2F#B33F2F

#B33F2F is a mid, vivid red. Relative luminance 0.133; OKLCH L 52.9% C 0.154 H 30.7°. Best body text is #FFFFFF at 5.72:1 contrast (WCAG AA passes).

Color values

HEX	#B33F2F
RGB	rgb(179, 63, 47)
HSL	hsl(7, 58%, 44%)
HSV	hsv(7, 74%, 70%)
CMYK	cmyk(0%, 64.8%, 73.7%, 29.8%)
CIE-LAB	lab(43.28, 46.19, 34.82)
CIE-LCH	lch(43.28, 57.84, 37.01°)
OKLab	oklab(52.87% 0.1324 0.0785)
OKLCH	oklch(52.87% 0.154 30.7)
XYZ	xyz(20.8832, 13.3469, 4.1653)
Luminance	0.1334 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33F2F #2FA3B3

analogous

#B32F61 #B33F2F #B3812F

triadic

#B33F2F #2FB33F #3F2FB3

tetradic

#B33F2F #61B32F #2FA3B3 #812FB3

square

#B33F2F #61B32F #2FA3B3 #812FB3

split-complementary

#B33F2F #2FB381 #2F61B3

monochromatic

#521D16 #832E22 #B33F2F #D15E4F #DD8A7F

Accessibility & contrast

On white

5.72

#B33F2F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.67

#B33F2F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33F2F

5.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33F2F	#FFFFFF	#000000	##FFFFFF
##B33F2F	1.00	5.72	3.67	5.72
#FFFFFF	5.72	1.00	21.00	1.00
#000000	3.67	21.00	1.00	21.00
##FFFFFF	5.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F562D

Deuteranopia (green-blind)

#7C702B

Tritanopia (blue-blind)

#C5213C

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b33f2f;
/* rgb */ color: rgb(179, 63, 47);
/* oklch */ color: oklch(52.9% 0.154 30.7);

Tailwind

colors: {
  custom: {
    50: '#d17a68',
    500: '#b33f2f',
    950: '#000000',
  },
}

SCSS

$custom: #b33f2f;
$custom-light: #d17a68;
$custom-dark: #000000;

JSON

{
  "hex": "#b33f2f",
  "rgb": {
    "r": 179,
    "g": 63,
    "b": 47
  },
  "hsl": {
    "h": 7.273,
    "s": 58.407,
    "l": 44.314
  },
  "oklch": {
    "l": 0.52868,
    "c": 0.15392,
    "h": 30.7
  },
  "luminance": 0.13344
}

Semantic roles & 50–950 ramp

primary

#B33F2F

secondary

#78BDC6

accent

#CFE246

background

#FDF7F6

surface

#FBEEEB

border

#D4C9C6

text

#150906

muted

#837B7A

Preview Lab

Preview with #B33F2F

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →