#31387D#31387D

#31387D is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.5% C 0.116 H 275.0°. Best body text is #FFFFFF at 10.54:1 contrast (WCAG AA passes).

Color values

HEX	#31387D
RGB	rgb(49, 56, 125)
HSL	hsl(234, 44%, 34%)
HSV	hsv(234, 61%, 49%)
CMYK	cmyk(60.8%, 55.2%, 0%, 51%)
CIE-LAB	lab(26.62, 19.49, -40.24)
CIE-LCH	lch(26.62, 44.71, 295.85°)
OKLab	oklab(37.5% 0.0101 -0.1153)
OKLCH	oklch(37.5% 0.116 275)
XYZ	xyz(6.3813, 4.9615, 20.0195)
Luminance	0.0496 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31387D #7D7631

analogous

#315E7D #31387D #50317D

triadic

#31387D #7D3138 #387D31

tetradic

#31387D #7D315E #7D7631 #317D50

square

#31387D #7D315E #7D7631 #317D50

split-complementary

#31387D #7D5031 #5E7D31

monochromatic

#0F1125 #202451 #31387D #424CA9 #666EC3

Accessibility & contrast

On white

10.54

#31387D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#31387D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31387D

10.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31387D	#FFFFFF	#000000	##FFFFFF
##31387D	1.00	10.54	1.99	10.54
#FFFFFF	10.54	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E427F

Deuteranopia (green-blind)

#003C7C

Tritanopia (blue-blind)

#004855

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #31387d;
/* rgb */ color: rgb(49, 56, 125);
/* oklch */ color: oklch(37.5% 0.116 275.0);

Tailwind

colors: {
  custom: {
    50: '#716ea3',
    500: '#31387d',
    950: '#000000',
  },
}

SCSS

$custom: #31387d;
$custom-light: #716ea3;
$custom-dark: #000000;

JSON

{
  "hex": "#31387d",
  "rgb": {
    "r": 49,
    "g": 56,
    "b": 125
  },
  "hsl": {
    "h": 234.474,
    "s": 43.678,
    "l": 34.118
  },
  "oklch": {
    "l": 0.37504,
    "c": 0.1157,
    "h": 275
  },
  "luminance": 0.04962
}

Semantic roles & 50–950 ramp

primary

#31387D

secondary

#AAA360

accent

#C854D3

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#08070F

muted

#7B7A7F

Preview Lab

Preview with #31387D

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

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