#31357D#31357D

#31357D is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.9% C 0.120 H 276.4°. Best body text is #FFFFFF at 10.85:1 contrast (WCAG AA passes).

Color values

HEX	#31357D
RGB	rgb(49, 53, 125)
HSL	hsl(237, 44%, 34%)
HSV	hsv(237, 61%, 49%)
CMYK	cmyk(60.8%, 57.6%, 0%, 51%)
CIE-LAB	lab(25.80, 21.53, -41.57)
CIE-LCH	lch(25.80, 46.81, 297.38°)
OKLab	oklab(36.89% 0.0134 -0.1192)
OKLCH	oklch(36.89% 0.12 276.4)
XYZ	xyz(6.2402, 4.6794, 19.9724)
Luminance	0.0468 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31357D #7D7931

analogous

#315B7D #31357D #53317D

triadic

#31357D #7D3135 #357D31

tetradic

#31357D #7D315B #7D7931 #317D53

square

#31357D #7D315B #7D7931 #317D53

split-complementary

#31357D #7D5331 #5B7D31

monochromatic

#0F1025 #202251 #31357D #4248A9 #666AC3

Accessibility & contrast

On white

10.85

#31357D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#31357D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31357D

10.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31357D	#FFFFFF	#000000	##FFFFFF
##31357D	1.00	10.85	1.94	10.85
#FFFFFF	10.85	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00407F

Deuteranopia (green-blind)

#003A7C

Tritanopia (blue-blind)

#004653

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #31357d;
/* rgb */ color: rgb(49, 53, 125);
/* oklch */ color: oklch(36.9% 0.120 276.4);

Tailwind

colors: {
  custom: {
    50: '#716ca3',
    500: '#31357d',
    950: '#000000',
  },
}

SCSS

$custom: #31357d;
$custom-light: #716ca3;
$custom-dark: #000000;

JSON

{
  "hex": "#31357d",
  "rgb": {
    "r": 49,
    "g": 53,
    "b": 125
  },
  "hsl": {
    "h": 236.842,
    "s": 43.678,
    "l": 34.118
  },
  "oklch": {
    "l": 0.36888,
    "c": 0.11996,
    "h": 276.4
  },
  "luminance": 0.0468
}

Semantic roles & 50–950 ramp

primary

#31357D

secondary

#AAA660

accent

#CD54D3

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#08070F

muted

#7B7A7F

Preview Lab

Preview with #31357D

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

Preview Lab → · Contrast checker → · Palette generator →