#631720#631720

#631720 is a dark, moderate red. Relative luminance 0.034; OKLCH L 33.6% C 0.108 H 18.8°. Best body text is #FFFFFF at 12.54:1 contrast (WCAG AA passes).

Color values

HEX	#631720
RGB	rgb(99, 23, 32)
HSL	hsl(353, 62%, 24%)
HSV	hsv(353, 77%, 39%)
CMYK	cmyk(0%, 76.8%, 67.7%, 61.2%)
CIE-LAB	lab(21.47, 34.35, 14.46)
CIE-LCH	lch(21.47, 37.27, 22.83°)
OKLab	oklab(33.64% 0.1021 0.0347)
OKLCH	oklch(33.64% 0.108 18.8)
XYZ	xyz(5.7133, 3.3706, 1.7160)
Luminance	0.0337 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631720 #17635A

analogous

#631746 #631720 #633417

triadic

#631720 #206317 #172063

tetradic

#631720 #466317 #17635A #341763

square

#631720 #466317 #17635A #341763

split-complementary

#631720 #176334 #174663

monochromatic

#190608 #310B10 #631720 #952330 #C62E40

Accessibility & contrast

On white

12.54

#631720 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#631720 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631720

12.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631720	#FFFFFF	#000000	##FFFFFF
##631720	1.00	12.54	1.67	12.54
#FFFFFF	12.54	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C2920

Deuteranopia (green-blind)

#3F391E

Tritanopia (blue-blind)

#6D011B

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #631720;
/* rgb */ color: rgb(99, 23, 32);
/* oklch */ color: oklch(33.6% 0.108 18.8);

Tailwind

colors: {
  custom: {
    50: '#955b5b',
    500: '#631720',
    950: '#000000',
  },
}

SCSS

$custom: #631720;
$custom-light: #955b5b;
$custom-dark: #000000;

JSON

{
  "hex": "#631720",
  "rgb": {
    "r": 99,
    "g": 23,
    "b": 32
  },
  "hsl": {
    "h": 352.895,
    "s": 62.295,
    "l": 23.922
  },
  "oklch": {
    "l": 0.33639,
    "c": 0.10782,
    "h": 18.8
  },
  "luminance": 0.0337
}

Semantic roles & 50–950 ramp

primary

#631720

secondary

#3C9A8E

accent

#E5D242

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0404

muted

#7E7979

Preview Lab

Preview with #631720

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

Preview Lab → · Contrast checker → · Palette generator →