#31377F#31377F

#31377F is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.5% C 0.120 H 275.4°. Best body text is #FFFFFF at 10.59:1 contrast (WCAG AA passes).

Color values

HEX	#31377F
RGB	rgb(49, 55, 127)
HSL	hsl(235, 44%, 35%)
HSV	hsv(235, 61%, 50%)
CMYK	cmyk(61.4%, 56.7%, 0%, 50.2%)
CIE-LAB	lab(26.50, 20.89, -41.70)
CIE-LCH	lch(26.50, 46.64, 296.61°)
OKLab	oklab(37.46% 0.0113 -0.1196)
OKLCH	oklch(37.46% 0.12 275.4)
XYZ	xyz(6.4623, 4.9172, 20.6831)
Luminance	0.0492 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31377F #7F7931

analogous

#315E7F #31377F #52317F

triadic

#31377F #7F3137 #377F31

tetradic

#31377F #7F315E #7F7931 #317F52

square

#31377F #7F315E #7F7931 #317F52

split-complementary

#31377F #7F5231 #5E7F31

monochromatic

#0F1127 #202453 #31377F #424AAB #666EC4

Accessibility & contrast

On white

10.59

#31377F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#31377F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31377F

10.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31377F	#FFFFFF	#000000	##FFFFFF
##31377F	1.00	10.59	1.98	10.59
#FFFFFF	10.59	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#054281

Deuteranopia (green-blind)

#003B7E

Tritanopia (blue-blind)

#004855

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #31377f;
/* rgb */ color: rgb(49, 55, 127);
/* oklch */ color: oklch(37.5% 0.120 275.4);

Tailwind

colors: {
  custom: {
    50: '#716da5',
    500: '#31377f',
    950: '#000000',
  },
}

SCSS

$custom: #31377f;
$custom-light: #716da5;
$custom-dark: #000000;

JSON

{
  "hex": "#31377f",
  "rgb": {
    "r": 49,
    "g": 55,
    "b": 127
  },
  "hsl": {
    "h": 235.385,
    "s": 44.318,
    "l": 34.51
  },
  "oklch": {
    "l": 0.37456,
    "c": 0.1201,
    "h": 275.4
  },
  "luminance": 0.04918
}

Semantic roles & 50–950 ramp

primary

#31377F

secondary

#ABA660

accent

#CA54D4

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#08070F

muted

#7B7A7F

Preview Lab

Preview with #31377F

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

Preview Lab → · Contrast checker → · Palette generator →