#631515#631515

#631515 is a dark, moderate red. Relative luminance 0.032; OKLCH L 33.2% C 0.111 H 25.6°. Best body text is #FFFFFF at 12.74:1 contrast (WCAG AA passes).

Color values

HEX	#631515
RGB	rgb(99, 21, 21)
HSL	hsl(0, 65%, 24%)
HSV	hsv(0, 79%, 39%)
CMYK	cmyk(0%, 78.8%, 78.8%, 61.2%)
CIE-LAB	lab(21.00, 34.51, 21.31)
CIE-LCH	lch(21.00, 40.56, 31.69°)
OKLab	oklab(33.23% 0.1 0.048)
OKLCH	oklch(33.23% 0.111 25.6)
XYZ	xyz(5.5498, 3.2440, 1.0433)
Luminance	0.0324 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631515 #156363

analogous

#63153C #631515 #633C15

triadic

#631515 #156315 #151563

tetradic

#631515 #3C6315 #156363 #3C1563

square

#631515 #3C6315 #156363 #3C1563

split-complementary

#631515 #15633C #153C63

monochromatic

#190505 #310A0A #631515 #952020 #C82A2A

Accessibility & contrast

On white

12.74

#631515 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#631515 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631515

12.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631515	#FFFFFF	#000000	##FFFFFF
##631515	1.00	12.74	1.65	12.74
#FFFFFF	12.74	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C2814

Deuteranopia (green-blind)

#403912

Tritanopia (blue-blind)

#6E0016

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #631515;
/* rgb */ color: rgb(99, 21, 21);
/* oklch */ color: oklch(33.2% 0.111 25.6);

Tailwind

colors: {
  custom: {
    50: '#965952',
    500: '#631515',
    950: '#000000',
  },
}

SCSS

$custom: #631515;
$custom-light: #965952;
$custom-dark: #000000;

JSON

{
  "hex": "#631515",
  "rgb": {
    "r": 99,
    "g": 21,
    "b": 21
  },
  "hsl": {
    "h": 0,
    "s": 65,
    "l": 23.529
  },
  "oklch": {
    "l": 0.33225,
    "c": 0.11089,
    "h": 25.6
  },
  "luminance": 0.03243
}

Semantic roles & 50–950 ramp

primary

#631515

secondary

#3A9A9A

accent

#E8E840

background

#F9F5F4

surface

#F2E9E7

border

#CCC5C3

text

#0F0402

muted

#7E7978

Preview Lab

Preview with #631515

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

Preview Lab → · Contrast checker → · Palette generator →