#31387C#31387C

#31387C is a dark, moderate blue. Relative luminance 0.049; OKLCH L 37.4% C 0.114 H 275.0°. Best body text is #FFFFFF at 10.57:1 contrast (WCAG AA passes).

Color values

HEX	#31387C
RGB	rgb(49, 56, 124)
HSL	hsl(234, 43%, 34%)
HSV	hsv(234, 60%, 49%)
CMYK	cmyk(60.5%, 54.8%, 0%, 51.4%)
CIE-LAB	lab(26.55, 19.13, -39.72)
CIE-LCH	lch(26.55, 44.09, 295.71°)
OKLab	oklab(37.43% 0.01 -0.1137)
OKLCH	oklch(37.43% 0.114 275)
XYZ	xyz(6.3177, 4.9361, 19.6847)
Luminance	0.0494 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31387C #7C7531

analogous

#315E7C #31387C #50317C

triadic

#31387C #7C3138 #387C31

tetradic

#31387C #7C315E #7C7531 #317C50

square

#31387C #7C315E #7C7531 #317C50

split-complementary

#31387C #7C5031 #5E7C31

monochromatic

#0E1024 #202450 #31387C #424CA8 #656EC2

Accessibility & contrast

On white

10.57

#31387C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#31387C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31387C

10.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31387C	#FFFFFF	#000000	##FFFFFF
##31387C	1.00	10.57	1.99	10.57
#FFFFFF	10.57	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#10427E

Deuteranopia (green-blind)

#003C7B

Tritanopia (blue-blind)

#004854

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #31387c;
/* rgb */ color: rgb(49, 56, 124);
/* oklch */ color: oklch(37.4% 0.114 275.0);

Tailwind

colors: {
  custom: {
    50: '#716ea2',
    500: '#31387c',
    950: '#000000',
  },
}

SCSS

$custom: #31387c;
$custom-light: #716ea2;
$custom-dark: #000000;

JSON

{
  "hex": "#31387c",
  "rgb": {
    "r": 49,
    "g": 56,
    "b": 124
  },
  "hsl": {
    "h": 234.4,
    "s": 43.353,
    "l": 33.922
  },
  "oklch": {
    "l": 0.37426,
    "c": 0.11419,
    "h": 275
  },
  "luminance": 0.04937
}

Semantic roles & 50–950 ramp

primary

#31387C

secondary

#AAA35F

accent

#C755D3

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#08070F

muted

#7B7A7F

Preview Lab

Preview with #31387C

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

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