#B03F1B#B03F1B

#B03F1B is a mid, vivid red. Relative luminance 0.129; OKLCH L 52.2% C 0.155 H 37.2°. Best body text is #FFFFFF at 5.88:1 contrast (WCAG AA passes).

Color values

HEX	#B03F1B
RGB	rgb(176, 63, 27)
HSL	hsl(14, 73%, 40%)
HSV	hsv(14, 85%, 69%)
CMYK	cmyk(0%, 64.2%, 84.7%, 31%)
CIE-LAB	lab(42.56, 44.39, 44.33)
CIE-LCH	lch(42.56, 62.73, 44.96°)
OKLab	oklab(52.17% 0.1234 0.0935)
OKLCH	oklch(52.17% 0.155 37.2)
XYZ	xyz(19.8821, 12.8672, 2.4734)
Luminance	0.1286 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B03F1B #1B8CB0

analogous

#B01B41 #B03F1B #B08A1B

triadic

#B03F1B #1BB03F #3F1BB0

tetradic

#B03F1B #41B01B #1B8CB0 #8A1BB0

square

#B03F1B #41B01B #1B8CB0 #8A1BB0

split-complementary

#B03F1B #1BB08A #1B41B0

monochromatic

#46190B #7B2C13 #B03F1B #DE552A #E6805F

Accessibility & contrast

On white

5.88

#B03F1B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.57

#B03F1B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B03F1B

5.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B03F1B	#FFFFFF	#000000	##FFFFFF
##B03F1B	1.00	5.88	3.57	5.88
#FFFFFF	5.88	1.00	21.00	1.00
#000000	3.57	21.00	1.00	21.00
##FFFFFF	5.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#605515

Deuteranopia (green-blind)

#7B6E15

Tritanopia (blue-blind)

#C21F38

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b03f1b;
/* rgb */ color: rgb(176, 63, 27);
/* oklch */ color: oklch(52.2% 0.155 37.2);

Tailwind

colors: {
  custom: {
    50: '#d0795b',
    500: '#b03f1b',
    950: '#000000',
  },
}

SCSS

$custom: #b03f1b;
$custom-light: #d0795b;
$custom-dark: #000000;

JSON

{
  "hex": "#b03f1b",
  "rgb": {
    "r": 176,
    "g": 63,
    "b": 27
  },
  "hsl": {
    "h": 14.497,
    "s": 73.399,
    "l": 39.804
  },
  "oklch": {
    "l": 0.52167,
    "c": 0.15487,
    "h": 37.2
  },
  "luminance": 0.12864
}

Semantic roles & 50–950 ramp

primary

#B03F1B

secondary

#5CB0CB

accent

#C4F038

background

#FEF7F5

surface

#FCEEE9

border

#D5C9C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B03F1B

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

Preview Lab → · Contrast checker → · Palette generator →