#B03F27#B03F27

#B03F27 is a mid, vivid red. Relative luminance 0.129; OKLCH L 52.3% C 0.152 H 33.7°. Best body text is #FFFFFF at 5.86:1 contrast (WCAG AA passes).

Color values

HEX	#B03F27
RGB	rgb(176, 63, 39)
HSL	hsl(11, 64%, 42%)
HSV	hsv(11, 78%, 69%)
CMYK	cmyk(0%, 64.2%, 77.8%, 31%)
CIE-LAB	lab(42.66, 44.78, 38.41)
CIE-LCH	lch(42.66, 59.00, 40.62°)
OKLab	oklab(52.28% 0.1268 0.0845)
OKLCH	oklch(52.28% 0.152 33.7)
XYZ	xyz(20.0504, 12.9345, 3.3599)
Luminance	0.1293 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B03F27 #2798B0

analogous

#B02754 #B03F27 #B08427

triadic

#B03F27 #27B03F #3F27B0

tetradic

#B03F27 #54B027 #2798B0 #8427B0

square

#B03F27 #54B027 #2798B0 #8427B0

split-complementary

#B03F27 #27B084 #2754B0

monochromatic

#4C1B11 #7E2D1C #B03F27 #D55A40 #E08572

Accessibility & contrast

On white

5.86

#B03F27 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#B03F27 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B03F27

5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B03F27	#FFFFFF	#000000	##FFFFFF
##B03F27	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)

#5F5524

Deuteranopia (green-blind)

#7B6E23

Tritanopia (blue-blind)

#C2213A

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b03f27;
/* rgb */ color: rgb(176, 63, 39);
/* oklch */ color: oklch(52.3% 0.152 33.7);

Tailwind

colors: {
  custom: {
    50: '#d07963',
    500: '#b03f27',
    950: '#000000',
  },
}

SCSS

$custom: #b03f27;
$custom-light: #d07963;
$custom-dark: #000000;

JSON

{
  "hex": "#b03f27",
  "rgb": {
    "r": 176,
    "g": 63,
    "b": 39
  },
  "hsl": {
    "h": 10.511,
    "s": 63.721,
    "l": 42.157
  },
  "oklch": {
    "l": 0.52276,
    "c": 0.15233,
    "h": 33.7
  },
  "luminance": 0.12932
}

Semantic roles & 50–950 ramp

primary

#B03F27

secondary

#6CB7C7

accent

#CAE741

background

#FDF7F5

surface

#FBEEEA

border

#D4C9C6

text

#150905

muted

#837B79

Preview Lab

Preview with #B03F27

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

Preview Lab → · Contrast checker → · Palette generator →