#31358B#31358B

#31358B is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.1% C 0.140 H 275.5°. Best body text is #FFFFFF at 10.43:1 contrast (WCAG AA passes).

Color values

HEX	#31358B
RGB	rgb(49, 53, 139)
HSL	hsl(237, 48%, 37%)
HSV	hsv(237, 65%, 55%)
CMYK	cmyk(64.7%, 61.9%, 0%, 45.5%)
CIE-LAB	lab(26.91, 26.58, -48.51)
CIE-LCH	lch(26.91, 55.31, 298.72°)
OKLab	oklab(38.06% 0.0134 -0.1396)
OKLCH	oklch(38.06% 0.14 275.5)
XYZ	xyz(7.1984, 5.0627, 25.0189)
Luminance	0.0506 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31358B #8B8731

analogous

#31628B #31358B #5A318B

triadic

#31358B #8B3135 #358B31

tetradic

#31358B #8B3162 #8B8731 #318B5A

square

#31358B #8B3162 #8B8731 #318B5A

split-complementary

#31358B #8B5A31 #628B31

monochromatic

#111231 #21245E #31358B #4146B8 #6B70CB

Accessibility & contrast

On white

10.43

#31358B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#31358B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31358B

10.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31358B	#FFFFFF	#000000	##FFFFFF
##31358B	1.00	10.43	2.01	10.43
#FFFFFF	10.43	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00448E

Deuteranopia (green-blind)

#003C89

Tritanopia (blue-blind)

#004A5A

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #31358b;
/* rgb */ color: rgb(49, 53, 139);
/* oklch */ color: oklch(38.1% 0.140 275.5);

Tailwind

colors: {
  custom: {
    50: '#746cae',
    500: '#31358b',
    950: '#000000',
  },
}

SCSS

$custom: #31358b;
$custom-light: #746cae;
$custom-dark: #000000;

JSON

{
  "hex": "#31358b",
  "rgb": {
    "r": 49,
    "g": 53,
    "b": 139
  },
  "hsl": {
    "h": 237.333,
    "s": 47.872,
    "l": 36.863
  },
  "oklch": {
    "l": 0.38063,
    "c": 0.14027,
    "h": 275.5
  },
  "luminance": 0.05063
}

Semantic roles & 50–950 ramp

primary

#31358B

secondary

#B2AF65

accent

#D150D7

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #31358B

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

Preview Lab → · Contrast checker → · Palette generator →