#631510#631510

#631510 is a dark, moderate red. Relative luminance 0.032; OKLCH L 33.2% C 0.112 H 28.5°. Best body text is #FFFFFF at 12.76:1 contrast (WCAG AA passes).

Color values

HEX	#631510
RGB	rgb(99, 21, 16)
HSL	hsl(4, 72%, 23%)
HSV	hsv(4, 84%, 39%)
CMYK	cmyk(0%, 78.8%, 83.8%, 61.2%)
CIE-LAB	lab(20.93, 34.30, 24.32)
CIE-LCH	lch(20.93, 42.04, 35.34°)
OKLab	oklab(33.16% 0.0981 0.0532)
OKLCH	oklch(33.16% 0.112 28.5)
XYZ	xyz(5.5079, 3.2273, 0.8230)
Luminance	0.0323 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631510 #105E63

analogous

#631035 #631510 #633E10

triadic

#631510 #106315 #151063

tetradic

#631510 #356310 #105E63 #3E1063

square

#631510 #356310 #105E63 #3E1063

split-complementary

#631510 #10633E #103563

monochromatic

#1A0604 #2E0A07 #631510 #982019 #CC2B21

Accessibility & contrast

On white

12.76

#631510 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#631510 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631510

12.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631510	#FFFFFF	#000000	##FFFFFF
##631510	1.00	12.76	1.65	12.76
#FFFFFF	12.76	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D270F

Deuteranopia (green-blind)

#40390D

Tritanopia (blue-blind)

#6E0015

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #631510;
/* rgb */ color: rgb(99, 21, 16);
/* oklch */ color: oklch(33.2% 0.112 28.5);

Tailwind

colors: {
  custom: {
    50: '#97594f',
    500: '#631510',
    950: '#000000',
  },
}

SCSS

$custom: #631510;
$custom-light: #97594f;
$custom-dark: #000000;

JSON

{
  "hex": "#631510",
  "rgb": {
    "r": 99,
    "g": 21,
    "b": 16
  },
  "hsl": {
    "h": 3.614,
    "s": 72.174,
    "l": 22.549
  },
  "oklch": {
    "l": 0.33157,
    "c": 0.11164,
    "h": 28.5
  },
  "luminance": 0.03226
}

Semantic roles & 50–950 ramp

primary

#631510

secondary

#33959C

accent

#E4EF39

background

#FAF5F4

surface

#F3E9E7

border

#CDC5C3

text

#0F0401

muted

#7F7977

Preview Lab

Preview with #631510

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

Preview Lab → · Contrast checker → · Palette generator →