#31377D#31377D

#31377D is a dark, moderate blue. Relative luminance 0.049; OKLCH L 37.3% C 0.117 H 275.5°. Best body text is #FFFFFF at 10.64:1 contrast (WCAG AA passes).

Color values

HEX	#31377D
RGB	rgb(49, 55, 125)
HSL	hsl(235, 44%, 34%)
HSV	hsv(235, 61%, 49%)
CMYK	cmyk(60.8%, 56%, 0%, 51%)
CIE-LAB	lab(26.35, 20.17, -40.68)
CIE-LCH	lch(26.35, 45.41, 296.37°)
OKLab	oklab(37.3% 0.0112 -0.1166)
OKLCH	oklch(37.3% 0.117 275.5)
XYZ	xyz(6.3333, 4.8655, 20.0035)
Luminance	0.0487 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31377D #7D7731

analogous

#315D7D #31377D #51317D

triadic

#31377D #7D3137 #377D31

tetradic

#31377D #7D315D #7D7731 #317D51

square

#31377D #7D315D #7D7731 #317D51

split-complementary

#31377D #7D5131 #5D7D31

monochromatic

#0F1025 #202451 #31377D #424AA9 #666DC3

Accessibility & contrast

On white

10.64

#31377D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#31377D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31377D

10.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31377D	#FFFFFF	#000000	##FFFFFF
##31377D	1.00	10.64	1.97	10.64
#FFFFFF	10.64	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#09427F

Deuteranopia (green-blind)

#003B7C

Tritanopia (blue-blind)

#004754

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #31377d;
/* rgb */ color: rgb(49, 55, 125);
/* oklch */ color: oklch(37.3% 0.117 275.5);

Tailwind

colors: {
  custom: {
    50: '#716da3',
    500: '#31377d',
    950: '#000000',
  },
}

SCSS

$custom: #31377d;
$custom-light: #716da3;
$custom-dark: #000000;

JSON

{
  "hex": "#31377d",
  "rgb": {
    "r": 49,
    "g": 55,
    "b": 125
  },
  "hsl": {
    "h": 235.263,
    "s": 43.678,
    "l": 34.118
  },
  "oklch": {
    "l": 0.37296,
    "c": 0.11711,
    "h": 275.5
  },
  "luminance": 0.04866
}

Semantic roles & 50–950 ramp

primary

#31377D

secondary

#AAA460

accent

#C954D3

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#08070F

muted

#7B7A7F

Preview Lab

Preview with #31377D

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

Preview Lab → · Contrast checker → · Palette generator →