#31366B#31366B

#31366B is a dark, moderate blue. Relative luminance 0.044; OKLCH L 35.7% C 0.091 H 276.7°. Best body text is #FFFFFF at 11.23:1 contrast (WCAG AA passes).

Color values

HEX	#31366B
RGB	rgb(49, 54, 107)
HSL	hsl(235, 37%, 31%)
HSV	hsv(235, 54%, 42%)
CMYK	cmyk(54.2%, 49.5%, 0%, 58%)
CIE-LAB	lab(24.80, 14.40, -31.71)
CIE-LCH	lch(24.80, 34.83, 294.43°)
OKLab	oklab(35.73% 0.0106 -0.0902)
OKLCH	oklch(35.73% 0.091 276.7)
XYZ	xyz(5.2388, 4.3525, 14.4711)
Luminance	0.0435 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31366B #6B6631

analogous

#31536B #31366B #49316B

triadic

#31366B #6B3136 #366B31

tetradic

#31366B #6B3153 #6B6631 #316B49

square

#31366B #6B3153 #6B6631 #316B49

split-complementary

#31366B #6B4931 #536B31

monochromatic

#0B0C17 #1E2141 #31366B #444B95 #6068B6

Accessibility & contrast

On white

11.23

#31366B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#31366B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31366B

11.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31366B	#FFFFFF	#000000	##FFFFFF
##31366B	1.00	11.23	1.87	11.23
#FFFFFF	11.23	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F3D6D

Deuteranopia (green-blind)

#19396A

Tritanopia (blue-blind)

#19414B

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #31366b;
/* rgb */ color: rgb(49, 54, 107);
/* oklch */ color: oklch(35.7% 0.091 276.7);

Tailwind

colors: {
  custom: {
    50: '#6e6c96',
    500: '#31366b',
    950: '#000000',
  },
}

SCSS

$custom: #31366b;
$custom-light: #6e6c96;
$custom-dark: #000000;

JSON

{
  "hex": "#31366b",
  "rgb": {
    "r": 49,
    "g": 54,
    "b": 107
  },
  "hsl": {
    "h": 234.828,
    "s": 37.179,
    "l": 30.588
  },
  "oklch": {
    "l": 0.35729,
    "c": 0.09084,
    "h": 276.7
  },
  "luminance": 0.04353
}

Semantic roles & 50–950 ramp

primary

#31366B

secondary

#9C975C

accent

#C35BCD

background

#F6F6F9

surface

#ECEBF2

border

#C7C6CC

text

#07070D

muted

#7A7A7E

Preview Lab

Preview with #31366B

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

Preview Lab → · Contrast checker → · Palette generator →