#311E91#311E91

#311E91 is a dark, vivid blue. Relative luminance 0.036; OKLCH L 35.0% C 0.175 H 279.9°. Best body text is #FFFFFF at 12.17:1 contrast (WCAG AA passes).

Color values

HEX	#311E91
RGB	rgb(49, 30, 145)
HSL	hsl(250, 66%, 34%)
HSV	hsv(250, 79%, 57%)
CMYK	cmyk(66.2%, 79.3%, 0%, 43.1%)
CIE-LAB	lab(22.39, 42.49, -59.65)
CIE-LCH	lch(22.39, 73.23, 305.47°)
OKLab	oklab(34.98% 0.03 -0.1722)
OKLCH	oklch(34.98% 0.175 279.9)
XYZ	xyz(6.8401, 3.6253, 27.1219)
Luminance	0.0363 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311E91 #7E911E

analogous

#1E4591 #311E91 #6B1E91

triadic

#311E91 #91311E #1E9131

tetradic

#311E91 #911E45 #7E911E #1E916B

square

#311E91 #911E45 #7E911E #1E916B

split-complementary

#311E91 #916B1E #45911E

monochromatic

#0F092C #20145E #311E91 #4228C4 #664FDB

Accessibility & contrast

On white

12.17

#311E91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#311E91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311E91

12.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311E91	#FFFFFF	#000000	##FFFFFF
##311E91	1.00	12.17	1.73	12.17
#FFFFFF	12.17	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A94

Deuteranopia (green-blind)

#00318F

Tritanopia (blue-blind)

#004057

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #311e91;
/* rgb */ color: rgb(49, 30, 145);
/* oklch */ color: oklch(35.0% 0.175 279.9);

Tailwind

colors: {
  custom: {
    50: '#775db2',
    500: '#311e91',
    950: '#000000',
  },
}

SCSS

$custom: #311e91;
$custom-light: #775db2;
$custom-dark: #000000;

JSON

{
  "hex": "#311e91",
  "rgb": {
    "r": 49,
    "g": 30,
    "b": 145
  },
  "hsl": {
    "h": 249.913,
    "s": 65.714,
    "l": 34.314
  },
  "oklch": {
    "l": 0.34984,
    "c": 0.17479,
    "h": 279.9
  },
  "luminance": 0.03626
}

Semantic roles & 50–950 ramp

primary

#311E91

secondary

#ABBD4D

accent

#E93FCD

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0411

muted

#7C7980

Preview Lab

Preview with #311E91

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

Preview Lab → · Contrast checker → · Palette generator →