#31358D#31358D

#31358D is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.2% C 0.143 H 275.3°. Best body text is #FFFFFF at 10.37:1 contrast (WCAG AA passes).

Color values

HEX	#31358D
RGB	rgb(49, 53, 141)
HSL	hsl(237, 48%, 37%)
HSV	hsv(237, 65%, 55%)
CMYK	cmyk(65.2%, 62.4%, 0%, 44.7%)
CIE-LAB	lab(27.08, 27.30, -49.48)
CIE-LCH	lch(27.08, 56.51, 298.88°)
OKLab	oklab(38.24% 0.0133 -0.1425)
OKLCH	oklch(38.24% 0.143 275.3)
XYZ	xyz(7.3459, 5.1216, 25.7956)
Luminance	0.0512 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31358D #8D8931

analogous

#31638D #31358D #5B318D

triadic

#31358D #8D3135 #358D31

tetradic

#31358D #8D3163 #8D8931 #318D5B

square

#31358D #8D3163 #8D8931 #318D5B

split-complementary

#31358D #8D5B31 #638D31

monochromatic

#111332 #212460 #31358D #4146BA #6C71CC

Accessibility & contrast

On white

10.37

#31358D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#31358D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31358D

10.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31358D	#FFFFFF	#000000	##FFFFFF
##31358D	1.00	10.37	2.02	10.37
#FFFFFF	10.37	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004490

Deuteranopia (green-blind)

#003C8B

Tritanopia (blue-blind)

#004B5B

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #31358d;
/* rgb */ color: rgb(49, 53, 141);
/* oklch */ color: oklch(38.2% 0.143 275.3);

Tailwind

colors: {
  custom: {
    50: '#746caf',
    500: '#31358d',
    950: '#000000',
  },
}

SCSS

$custom: #31358d;
$custom-light: #746caf;
$custom-dark: #000000;

JSON

{
  "hex": "#31358d",
  "rgb": {
    "r": 49,
    "g": 53,
    "b": 141
  },
  "hsl": {
    "h": 237.391,
    "s": 48.421,
    "l": 37.255
  },
  "oklch": {
    "l": 0.38237,
    "c": 0.1431,
    "h": 275.3
  },
  "luminance": 0.05122
}

Semantic roles & 50–950 ramp

primary

#31358D

secondary

#B4B066

accent

#D250D8

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #31358D

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

Preview Lab → · Contrast checker → · Palette generator →