#31368B#31368B

#31368B is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.3% C 0.139 H 275.1°. Best body text is #FFFFFF at 10.34:1 contrast (WCAG AA passes).

Color values

HEX	#31368B
RGB	rgb(49, 54, 139)
HSL	hsl(237, 48%, 37%)
HSV	hsv(237, 65%, 55%)
CMYK	cmyk(64.7%, 61.2%, 0%, 45.5%)
CIE-LAB	lab(27.17, 25.91, -48.09)
CIE-LCH	lch(27.17, 54.63, 298.32°)
OKLab	oklab(38.25% 0.0124 -0.1384)
OKLCH	oklch(38.25% 0.139 275.1)
XYZ	xyz(7.2445, 5.1548, 25.0343)
Luminance	0.0515 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31368B #8B8631

analogous

#31638B #31368B #59318B

triadic

#31368B #8B3136 #368B31

tetradic

#31368B #8B3163 #8B8631 #318B59

square

#31368B #8B3163 #8B8631 #318B59

split-complementary

#31368B #8B5931 #638B31

monochromatic

#111331 #21245E #31368B #4148B8 #6B71CB

Accessibility & contrast

On white

10.34

#31368B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#31368B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31368B

10.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31368B	#FFFFFF	#000000	##FFFFFF
##31368B	1.00	10.34	2.03	10.34
#FFFFFF	10.34	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00448E

Deuteranopia (green-blind)

#003C89

Tritanopia (blue-blind)

#004B5B

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #31368b;
/* rgb */ color: rgb(49, 54, 139);
/* oklch */ color: oklch(38.3% 0.139 275.1);

Tailwind

colors: {
  custom: {
    50: '#746dae',
    500: '#31368b',
    950: '#000000',
  },
}

SCSS

$custom: #31368b;
$custom-light: #746dae;
$custom-dark: #000000;

JSON

{
  "hex": "#31368b",
  "rgb": {
    "r": 49,
    "g": 54,
    "b": 139
  },
  "hsl": {
    "h": 236.667,
    "s": 47.872,
    "l": 36.863
  },
  "oklch": {
    "l": 0.38254,
    "c": 0.13895,
    "h": 275.1
  },
  "luminance": 0.05155
}

Semantic roles & 50–950 ramp

primary

#31368B

secondary

#B2AE65

accent

#D050D7

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #31368B

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

Preview Lab → · Contrast checker → · Palette generator →