#31307D#31307D

#31307D is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.9% C 0.127 H 278.5°. Best body text is #FFFFFF at 11.35:1 contrast (WCAG AA passes).

Color values

HEX	#31307D
RGB	rgb(49, 48, 125)
HSL	hsl(241, 45%, 34%)
HSV	hsv(241, 62%, 49%)
CMYK	cmyk(60.8%, 61.6%, 0%, 51%)
CIE-LAB	lab(24.47, 24.90, -43.72)
CIE-LCH	lch(24.47, 50.32, 299.67°)
OKLab	oklab(35.9% 0.0187 -0.1256)
OKLCH	oklch(35.9% 0.127 278.5)
XYZ	xyz(6.0241, 4.2471, 19.9004)
Luminance	0.0425 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31307D #7C7D30

analogous

#30567D #31307D #58307D

triadic

#31307D #7D3130 #307D31

tetradic

#31307D #7D3056 #7C7D30 #307D58

square

#31307D #7D3056 #7C7D30 #307D58

split-complementary

#31307D #7D5830 #567D30

monochromatic

#0E0E25 #201F51 #31307D #4241A9 #6564C3

Accessibility & contrast

On white

11.35

#31307D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#31307D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31307D

11.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31307D	#FFFFFF	#000000	##FFFFFF
##31307D	1.00	11.35	1.85	11.35
#FFFFFF	11.35	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D80

Deuteranopia (green-blind)

#00377B

Tritanopia (blue-blind)

#004351

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #31307d;
/* rgb */ color: rgb(49, 48, 125);
/* oklch */ color: oklch(35.9% 0.127 278.5);

Tailwind

colors: {
  custom: {
    50: '#7168a3',
    500: '#31307d',
    950: '#000000',
  },
}

SCSS

$custom: #31307d;
$custom-light: #7168a3;
$custom-dark: #000000;

JSON

{
  "hex": "#31307d",
  "rgb": {
    "r": 49,
    "g": 48,
    "b": 125
  },
  "hsl": {
    "h": 240.779,
    "s": 44.509,
    "l": 33.922
  },
  "oklch": {
    "l": 0.35901,
    "c": 0.12697,
    "h": 278.5
  },
  "luminance": 0.04248
}

Semantic roles & 50–950 ramp

primary

#31307D

secondary

#AAAB5E

accent

#D454D3

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#08060F

muted

#7B7A7F

Preview Lab

Preview with #31307D

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

Preview Lab → · Contrast checker → · Palette generator →