#31337E#31337E

#31337E is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.6% C 0.124 H 277.2°. Best body text is #FFFFFF at 11.02:1 contrast (WCAG AA passes).

Color values

HEX	#31337E
RGB	rgb(49, 51, 126)
HSL	hsl(238, 44%, 34%)
HSV	hsv(238, 61%, 49%)
CMYK	cmyk(61.1%, 59.5%, 0%, 50.6%)
CIE-LAB	lab(25.34, 23.24, -42.94)
CIE-LCH	lch(25.34, 48.83, 298.43°)
OKLab	oklab(36.57% 0.0155 -0.1233)
OKLCH	oklch(36.57% 0.124 277.2)
XYZ	xyz(6.2151, 4.5265, 20.2808)
Luminance	0.0453 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31337E #7E7C31

analogous

#315A7E #31337E #56317E

triadic

#31337E #7E3133 #337E31

tetradic

#31337E #7E315A #7E7C31 #317E56

square

#31337E #7E315A #7E7C31 #317E56

split-complementary

#31337E #7E5631 #5A7E31

monochromatic

#0F0F26 #202152 #31337E #4245AA #6668C3

Accessibility & contrast

On white

11.02

#31337E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#31337E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31337E

11.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31337E	#FFFFFF	#000000	##FFFFFF
##31337E	1.00	11.02	1.91	11.02
#FFFFFF	11.02	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F81

Deuteranopia (green-blind)

#00397C

Tritanopia (blue-blind)

#004553

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #31337e;
/* rgb */ color: rgb(49, 51, 126);
/* oklch */ color: oklch(36.6% 0.124 277.2);

Tailwind

colors: {
  custom: {
    50: '#716aa4',
    500: '#31337e',
    950: '#000000',
  },
}

SCSS

$custom: #31337e;
$custom-light: #716aa4;
$custom-dark: #000000;

JSON

{
  "hex": "#31337e",
  "rgb": {
    "r": 49,
    "g": 51,
    "b": 126
  },
  "hsl": {
    "h": 238.442,
    "s": 44,
    "l": 34.314
  },
  "oklch": {
    "l": 0.3657,
    "c": 0.12424,
    "h": 277.2
  },
  "luminance": 0.04527
}

Semantic roles & 50–950 ramp

primary

#31337E

secondary

#ABA960

accent

#D054D4

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#08060F

muted

#7B7A7F

Preview Lab

Preview with #31337E

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

Preview Lab → · Contrast checker → · Palette generator →