#31387F#31387F

#31387F is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.7% C 0.119 H 274.9°. Best body text is #FFFFFF at 10.49:1 contrast (WCAG AA passes).

Color values

HEX	#31387F
RGB	rgb(49, 56, 127)
HSL	hsl(235, 44%, 35%)
HSV	hsv(235, 61%, 50%)
CMYK	cmyk(61.4%, 55.9%, 0%, 50.2%)
CIE-LAB	lab(26.77, 20.21, -41.25)
CIE-LCH	lch(26.77, 45.94, 296.11°)
OKLab	oklab(37.66% 0.0102 -0.1183)
OKLCH	oklch(37.66% 0.119 274.9)
XYZ	xyz(6.5103, 5.0131, 20.6991)
Luminance	0.0501 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31387F #7F7831

analogous

#315F7F #31387F #51317F

triadic

#31387F #7F3138 #387F31

tetradic

#31387F #7F315F #7F7831 #317F51

square

#31387F #7F315F #7F7831 #317F51

split-complementary

#31387F #7F5131 #5F7F31

monochromatic

#0F1127 #202553 #31387F #424BAB #666FC4

Accessibility & contrast

On white

10.49

#31387F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#31387F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31387F

10.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31387F	#FFFFFF	#000000	##FFFFFF
##31387F	1.00	10.49	2.00	10.49
#FFFFFF	10.49	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#094381

Deuteranopia (green-blind)

#003C7E

Tritanopia (blue-blind)

#004956

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #31387f;
/* rgb */ color: rgb(49, 56, 127);
/* oklch */ color: oklch(37.7% 0.119 274.9);

Tailwind

colors: {
  custom: {
    50: '#716ea5',
    500: '#31387f',
    950: '#000000',
  },
}

SCSS

$custom: #31387f;
$custom-light: #716ea5;
$custom-dark: #000000;

JSON

{
  "hex": "#31387f",
  "rgb": {
    "r": 49,
    "g": 56,
    "b": 127
  },
  "hsl": {
    "h": 234.615,
    "s": 44.318,
    "l": 34.51
  },
  "oklch": {
    "l": 0.37661,
    "c": 0.1187,
    "h": 274.9
  },
  "luminance": 0.05014
}

Semantic roles & 50–950 ramp

primary

#31387F

secondary

#ABA560

accent

#C954D4

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#08070F

muted

#7B7A7F

Preview Lab

Preview with #31387F

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

Preview Lab → · Contrast checker → · Palette generator →