#5A101B#5A101B

#5A101B is a dark, moderate red. Relative luminance 0.026; OKLCH L 31.0% C 0.105 H 18.1°. Best body text is #FFFFFF at 13.77:1 contrast (WCAG AA passes).

Color values

HEX	#5A101B
RGB	rgb(90, 16, 27)
HSL	hsl(351, 70%, 21%)
HSV	hsv(351, 82%, 35%)
CMYK	cmyk(0%, 82.2%, 70%, 64.7%)
CIE-LAB	lab(18.47, 33.63, 13.71)
CIE-LCH	lch(18.47, 36.32, 22.18°)
OKLab	oklab(31.03% 0.1 0.0327)
OKLCH	oklch(31.03% 0.105 18.1)
XYZ	xyz(4.6001, 2.6241, 1.3010)
Luminance	0.0262 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5A101B #105A4F

analogous

#5A1040 #5A101B #5A2A10

triadic

#5A101B #1B5A10 #101B5A

tetradic

#5A101B #405A10 #105A4F #2A105A

square

#5A101B #405A10 #105A4F #2A105A

split-complementary

#5A101B #105A2A #10405A

monochromatic

#1A0508 #26070B #5A101B #8E192B #C2223A

Accessibility & contrast

On white

13.77

#5A101B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#5A101B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #5A101B

13.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5A101B	#FFFFFF	#000000	##FFFFFF
##5A101B	1.00	13.77	1.52	13.77
#FFFFFF	13.77	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#25231B

Deuteranopia (green-blind)

#383319

Tritanopia (blue-blind)

#630015

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #5a101b;
/* rgb */ color: rgb(90, 16, 27);
/* oklch */ color: oklch(31.0% 0.105 18.1);

Tailwind

colors: {
  custom: {
    50: '#8e5657',
    500: '#5a101b',
    950: '#000000',
  },
}

SCSS

$custom: #5a101b;
$custom-light: #8e5657;
$custom-dark: #000000;

JSON

{
  "hex": "#5a101b",
  "rgb": {
    "r": 90,
    "g": 16,
    "b": 27
  },
  "hsl": {
    "h": 351.081,
    "s": 69.811,
    "l": 20.784
  },
  "oklch": {
    "l": 0.31029,
    "c": 0.10519,
    "h": 18.1
  },
  "luminance": 0.02623
}

Semantic roles & 50–950 ramp

primary

#5A101B

secondary

#339385

accent

#EDD23B

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0D0303

muted

#7E7878

Preview Lab

Preview with #5A101B

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

Preview Lab → · Contrast checker → · Palette generator →