#B03740#B03740

#B03740 is a mid, vivid red. Relative luminance 0.123; OKLCH L 51.7% C 0.156 H 20.4°. Best body text is #FFFFFF at 6.06:1 contrast (WCAG AA passes).

Color values

HEX	#B03740
RGB	rgb(176, 55, 64)
HSL	hsl(356, 52%, 45%)
HSV	hsv(356, 69%, 69%)
CMYK	cmyk(0%, 68.8%, 63.6%, 31%)
CIE-LAB	lab(41.74, 49.48, 22.75)
CIE-LCH	lch(41.74, 54.46, 24.70°)
OKLab	oklab(51.7% 0.1466 0.0546)
OKLCH	oklch(51.7% 0.156 20.4)
XYZ	xyz(20.1981, 12.3355, 6.1669)
Luminance	0.1233 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B03740 #37B0A7

analogous

#B0377D #B03740 #B06A37

triadic

#B03740 #40B037 #3740B0

tetradic

#B03740 #7DB037 #37B0A7 #6A37B0

square

#B03740 #7DB037 #37B0A7 #6A37B0

split-complementary

#B03740 #37B06A #377DB0

monochromatic

#531A1E #81282F #B03740 #CB5962 #DA888E

Accessibility & contrast

On white

6.06

#B03740 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#B03740 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B03740

6.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B03740	#FFFFFF	#000000	##FFFFFF
##B03740	1.00	6.06	3.47	6.06
#FFFFFF	6.06	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#57523F

Deuteranopia (green-blind)

#766C3D

Tritanopia (blue-blind)

#C1183B

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b03740;
/* rgb */ color: rgb(176, 55, 64);
/* oklch */ color: oklch(51.7% 0.156 20.4);

Tailwind

colors: {
  custom: {
    50: '#ce7574',
    500: '#b03740',
    950: '#000000',
  },
}

SCSS

$custom: #b03740;
$custom-light: #ce7574;
$custom-dark: #000000;

JSON

{
  "hex": "#b03740",
  "rgb": {
    "r": 176,
    "g": 55,
    "b": 64
  },
  "hsl": {
    "h": 355.537,
    "s": 52.381,
    "l": 45.294
  },
  "oklch": {
    "l": 0.51696,
    "c": 0.15641,
    "h": 20.4
  },
  "luminance": 0.12333
}

Semantic roles & 50–950 ramp

primary

#B03740

secondary

#7FC4BF

accent

#DCD14C

background

#FDF7F7

surface

#FBEDED

border

#D4C8C8

text

#150908

muted

#837B7B

Preview Lab

Preview with #B03740

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

Preview Lab → · Contrast checker → · Palette generator →