#B03031#B03031

#B03031 is a mid, vivid red. Relative luminance 0.116; OKLCH L 50.7% C 0.165 H 24.9°. Best body text is #FFFFFF at 6.34:1 contrast (WCAG AA passes).

Color values

HEX	#B03031
RGB	rgb(176, 48, 49)
HSL	hsl(360, 57%, 44%)
HSV	hsv(360, 73%, 69%)
CMYK	cmyk(0%, 72.7%, 72.2%, 31%)
CIE-LAB	lab(40.52, 51.36, 30.36)
CIE-LCH	lch(40.52, 59.66, 30.59°)
OKLab	oklab(50.71% 0.1494 0.0694)
OKLCH	oklch(50.71% 0.165 24.9)
XYZ	xyz(19.5180, 11.5687, 4.1104)
Luminance	0.1157 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B03031 #30B0AF

analogous

#B03071 #B03031 #B06F30

triadic

#B03031 #31B030 #3031B0

tetradic

#B03031 #71B030 #30B0AF #6F30B0

square

#B03031 #71B030 #30B0AF #6F30B0

split-complementary

#B03031 #30B06F #3071B0

monochromatic

#501616 #802324 #B03031 #CF4E4F #DC7E7F

Accessibility & contrast

On white

6.34

#B03031 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.31

#B03031 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B03031

6.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B03031	#FFFFFF	#000000	##FFFFFF
##B03031	1.00	6.34	3.31	6.34
#FFFFFF	6.34	1.00	21.00	1.00
#000000	3.31	21.00	1.00	21.00
##FFFFFF	6.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#554E30

Deuteranopia (green-blind)

#756A2D

Tritanopia (blue-blind)

#C20032

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #b03031;
/* rgb */ color: rgb(176, 48, 49);
/* oklch */ color: oklch(50.7% 0.165 24.9);

Tailwind

colors: {
  custom: {
    50: '#d07269',
    500: '#b03031',
    950: '#000000',
  },
}

SCSS

$custom: #b03031;
$custom-light: #d07269;
$custom-dark: #000000;

JSON

{
  "hex": "#b03031",
  "rgb": {
    "r": 176,
    "g": 48,
    "b": 49
  },
  "hsl": {
    "h": 359.531,
    "s": 57.143,
    "l": 43.922
  },
  "oklch": {
    "l": 0.50708,
    "c": 0.16474,
    "h": 24.9
  },
  "luminance": 0.11566
}

Semantic roles & 50–950 ramp

primary

#B03031

secondary

#77C5C4

accent

#E0DF47

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150806

muted

#837B7A

Preview Lab

Preview with #B03031

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

Preview Lab → · Contrast checker → · Palette generator →