#B03F3A#B03F3A

#B03F3A is a mid, vivid red. Relative luminance 0.131; OKLCH L 52.5% C 0.149 H 26.1°. Best body text is #FFFFFF at 5.80:1 contrast (WCAG AA passes).

Color values

HEX	#B03F3A
RGB	rgb(176, 63, 58)
HSL	hsl(3, 50%, 46%)
HSV	hsv(3, 67%, 69%)
CMYK	cmyk(0%, 64.2%, 67%, 31%)
CIE-LAB	lab(42.90, 45.70, 27.84)
CIE-LCH	lch(42.90, 53.51, 31.35°)
OKLab	oklab(52.53% 0.1335 0.0653)
OKLCH	oklch(52.53% 0.149 26.1)
XYZ	xyz(20.4478, 13.0934, 5.4527)
Luminance	0.1309 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B03F3A #3AABB0

analogous

#B03A70 #B03F3A #B07A3A

triadic

#B03F3A #3AB03F #3F3AB0

tetradic

#B03F3A #70B03A #3AABB0 #7A3AB0

square

#B03F3A #70B03A #3AABB0 #7A3AB0

split-complementary

#B03F3A #3AB07A #3A70B0

monochromatic

#541E1C #822F2B #B03F3A #CA625D #D98F8B

Accessibility & contrast

On white

5.80

#B03F3A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.62

#B03F3A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B03F3A

5.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B03F3A	#FFFFFF	#000000	##FFFFFF
##B03F3A	1.00	5.80	3.62	5.80
#FFFFFF	5.80	1.00	21.00	1.00
#000000	3.62	21.00	1.00	21.00
##FFFFFF	5.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5639

Deuteranopia (green-blind)

#796E37

Tritanopia (blue-blind)

#C1253F

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b03f3a;
/* rgb */ color: rgb(176, 63, 58);
/* oklch */ color: oklch(52.5% 0.149 26.1);

Tailwind

colors: {
  custom: {
    50: '#ce7a70',
    500: '#b03f3a',
    950: '#000000',
  },
}

SCSS

$custom: #b03f3a;
$custom-light: #ce7a70;
$custom-dark: #000000;

JSON

{
  "hex": "#b03f3a",
  "rgb": {
    "r": 176,
    "g": 63,
    "b": 58
  },
  "hsl": {
    "h": 2.542,
    "s": 50.427,
    "l": 45.882
  },
  "oklch": {
    "l": 0.52533,
    "c": 0.14858,
    "h": 26.1
  },
  "luminance": 0.13091
}

Semantic roles & 50–950 ramp

primary

#B03F3A

secondary

#82C1C3

accent

#D4DA4E

background

#FDF7F6

surface

#FBEEEC

border

#D4C9C7

text

#150907

muted

#837B7A

Preview Lab

Preview with #B03F3A

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

Preview Lab → · Contrast checker → · Palette generator →