#B33B30#B33B30

#B33B30 is a mid, vivid red. Relative luminance 0.129; OKLCH L 52.4% C 0.158 H 28.8°. Best body text is #FFFFFF at 5.86:1 contrast (WCAG AA passes).

Color values

HEX	#B33B30
RGB	rgb(179, 59, 48)
HSL	hsl(5, 58%, 45%)
HSV	hsv(5, 73%, 70%)
CMYK	cmyk(0%, 67%, 73.2%, 29.8%)
CIE-LAB	lab(42.65, 47.96, 33.54)
CIE-LCH	lch(42.65, 58.52, 34.97°)
OKLab	oklab(52.4% 0.1381 0.0759)
OKLCH	oklch(52.4% 0.158 28.8)
XYZ	xyz(20.6901, 12.9280, 4.2016)
Luminance	0.1293 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33B30 #30A8B3

analogous

#B33067 #B33B30 #B37D30

triadic

#B33B30 #30B33B #3B30B3

tetradic

#B33B30 #67B330 #30A8B3 #7D30B3

square

#B33B30 #67B330 #30A8B3 #7D30B3

split-complementary

#B33B30 #30B37D #3067B3

monochromatic

#521B16 #832B23 #B33B30 #D05B50 #DD8880

Accessibility & contrast

On white

5.86

#B33B30 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#B33B30 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33B30

5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33B30	#FFFFFF	#000000	##FFFFFF
##B33B30	1.00	5.86	3.59	5.86
#FFFFFF	5.86	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D542E

Deuteranopia (green-blind)

#7B6E2C

Tritanopia (blue-blind)

#C51939

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b33b30;
/* rgb */ color: rgb(179, 59, 48);
/* oklch */ color: oklch(52.4% 0.158 28.8);

Tailwind

colors: {
  custom: {
    50: '#d27869',
    500: '#b33b30',
    950: '#000000',
  },
}

SCSS

$custom: #b33b30;
$custom-light: #d27869;
$custom-dark: #000000;

JSON

{
  "hex": "#b33b30",
  "rgb": {
    "r": 179,
    "g": 59,
    "b": 48
  },
  "hsl": {
    "h": 5.038,
    "s": 57.709,
    "l": 44.51
  },
  "oklch": {
    "l": 0.52401,
    "c": 0.15763,
    "h": 28.8
  },
  "luminance": 0.12925
}

Semantic roles & 50–950 ramp

primary

#B33B30

secondary

#79C0C6

accent

#D4E147

background

#FDF7F6

surface

#FBEEEB

border

#D4C9C6

text

#150906

muted

#837B7A

Preview Lab

Preview with #B33B30

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

Preview Lab → · Contrast checker → · Palette generator →