#31357E#31357E

#31357E is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.0% C 0.121 H 276.3°. Best body text is #FFFFFF at 10.82:1 contrast (WCAG AA passes).

Color values

HEX	#31357E
RGB	rgb(49, 53, 126)
HSL	hsl(237, 44%, 34%)
HSV	hsv(237, 61%, 49%)
CMYK	cmyk(61.1%, 57.9%, 0%, 50.6%)
CIE-LAB	lab(25.88, 21.89, -42.07)
CIE-LCH	lch(25.88, 47.43, 297.49°)
OKLab	oklab(36.97% 0.0134 -0.1207)
OKLCH	oklch(36.97% 0.121 276.3)
XYZ	xyz(6.3044, 4.7051, 20.3106)
Luminance	0.0471 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31357E #7E7A31

analogous

#315C7E #31357E #54317E

triadic

#31357E #7E3135 #357E31

tetradic

#31357E #7E315C #7E7A31 #317E54

square

#31357E #7E315C #7E7A31 #317E54

split-complementary

#31357E #7E5431 #5C7E31

monochromatic

#0F1026 #202252 #31357E #4248AA #666BC3

Accessibility & contrast

On white

10.82

#31357E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#31357E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31357E

10.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31357E	#FFFFFF	#000000	##FFFFFF
##31357E	1.00	10.82	1.94	10.82
#FFFFFF	10.82	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004180

Deuteranopia (green-blind)

#003A7C

Tritanopia (blue-blind)

#004654

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #31357e;
/* rgb */ color: rgb(49, 53, 126);
/* oklch */ color: oklch(37.0% 0.121 276.3);

Tailwind

colors: {
  custom: {
    50: '#716ca4',
    500: '#31357e',
    950: '#000000',
  },
}

SCSS

$custom: #31357e;
$custom-light: #716ca4;
$custom-dark: #000000;

JSON

{
  "hex": "#31357e",
  "rgb": {
    "r": 49,
    "g": 53,
    "b": 126
  },
  "hsl": {
    "h": 236.883,
    "s": 44,
    "l": 34.314
  },
  "oklch": {
    "l": 0.36969,
    "c": 0.12144,
    "h": 276.3
  },
  "luminance": 0.04706
}

Semantic roles & 50–950 ramp

primary

#31357E

secondary

#ABA760

accent

#CD54D4

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#08070F

muted

#7B7A7F

Preview Lab

Preview with #31357E

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

Preview Lab → · Contrast checker → · Palette generator →