#631F2F#631F2F

#631F2F is a dark, moderate red. Relative luminance 0.038; OKLCH L 35.0% C 0.099 H 9.6°. Best body text is #FFFFFF at 11.88:1 contrast (WCAG AA passes).

Color values

HEX	#631F2F
RGB	rgb(99, 31, 47)
HSL	hsl(346, 52%, 25%)
HSV	hsv(346, 69%, 39%)
CMYK	cmyk(0%, 68.7%, 52.5%, 61.2%)
CIE-LAB	lab(23.13, 32.06, 6.36)
CIE-LCH	lch(23.13, 32.68, 11.22°)
OKLab	oklab(34.99% 0.0973 0.0164)
OKLCH	oklch(34.99% 0.099 9.6)
XYZ	xyz(6.1492, 3.8386, 3.1059)
Luminance	0.0384 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631F2F #1F6353

analogous

#631F51 #631F2F #63311F

triadic

#631F2F #2F631F #1F2F63

tetradic

#631F2F #51631F #1F6353 #311F63

square

#631F2F #51631F #1F6353 #311F63

split-complementary

#631F2F #1F6331 #1F5163

monochromatic

#17070B #341019 #631F2F #922E45 #C03C5B

Accessibility & contrast

On white

11.88

#631F2F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#631F2F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631F2F

11.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631F2F	#FFFFFF	#000000	##FFFFFF
##631F2F	1.00	11.88	1.77	11.88
#FFFFFF	11.88	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E2F2F

Deuteranopia (green-blind)

#403C2D

Tritanopia (blue-blind)

#6C1425

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #631f2f;
/* rgb */ color: rgb(99, 31, 47);
/* oklch */ color: oklch(35.0% 0.099 9.6);

Tailwind

colors: {
  custom: {
    50: '#935f67',
    500: '#631f2f',
    950: '#000000',
  },
}

SCSS

$custom: #631f2f;
$custom-light: #935f67;
$custom-dark: #000000;

JSON

{
  "hex": "#631f2f",
  "rgb": {
    "r": 99,
    "g": 31,
    "b": 47
  },
  "hsl": {
    "h": 345.882,
    "s": 52.308,
    "l": 25.49
  },
  "oklch": {
    "l": 0.34992,
    "c": 0.09868,
    "h": 9.6
  },
  "luminance": 0.03838
}

Semantic roles & 50–950 ramp

primary

#631F2F

secondary

#469884

accent

#DCBA4C

background

#F9F5F6

surface

#F2E9EB

border

#CCC5C6

text

#0E0506

muted

#7E797A

Preview Lab

Preview with #631F2F

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

Preview Lab → · Contrast checker → · Palette generator →