#631528#631528

#631528 is a dark, moderate red. Relative luminance 0.033; OKLCH L 33.6% C 0.110 H 11.5°. Best body text is #FFFFFF at 12.59:1 contrast (WCAG AA passes).

Color values

HEX	#631528
RGB	rgb(99, 21, 40)
HSL	hsl(345, 65%, 24%)
HSV	hsv(345, 79%, 39%)
CMYK	cmyk(0%, 78.8%, 59.6%, 61.2%)
CIE-LAB	lab(21.37, 35.75, 8.77)
CIE-LCH	lch(21.37, 36.81, 13.78°)
OKLab	oklab(33.62% 0.1081 0.022)
OKLCH	oklch(33.62% 0.11 11.5)
XYZ	xyz(5.7973, 3.3430, 2.3471)
Luminance	0.0334 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631528 #156350

analogous

#63154F #631528 #632915

triadic

#631528 #286315 #152863

tetradic

#631528 #4F6315 #156350 #291563

square

#631528 #4F6315 #156350 #291563

split-complementary

#631528 #156329 #154F63

monochromatic

#19050A #310A14 #631528 #95203C #C82A51

Accessibility & contrast

On white

12.59

#631528 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#631528 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631528

12.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631528	#FFFFFF	#000000	##FFFFFF
##631528	1.00	12.59	1.67	12.59
#FFFFFF	12.59	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#292928

Deuteranopia (green-blind)

#3E3926

Tritanopia (blue-blind)

#6D011D

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #631528;
/* rgb */ color: rgb(99, 21, 40);
/* oklch */ color: oklch(33.6% 0.110 11.5);

Tailwind

colors: {
  custom: {
    50: '#955a61',
    500: '#631528',
    950: '#000000',
  },
}

SCSS

$custom: #631528;
$custom-light: #955a61;
$custom-dark: #000000;

JSON

{
  "hex": "#631528",
  "rgb": {
    "r": 99,
    "g": 21,
    "b": 40
  },
  "hsl": {
    "h": 345.385,
    "s": 65,
    "l": 23.529
  },
  "oklch": {
    "l": 0.33622,
    "c": 0.11036,
    "h": 11.5
  },
  "luminance": 0.03342
}

Semantic roles & 50–950 ramp

primary

#631528

secondary

#3A9A83

accent

#E8BF40

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0405

muted

#7E7979

Preview Lab

Preview with #631528

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

Preview Lab → · Contrast checker → · Palette generator →