#311F96#311F96

#311F96 is a dark, vivid blue. Relative luminance 0.038; OKLCH L 35.7% C 0.180 H 279.0°. Best body text is #FFFFFF at 11.88:1 contrast (WCAG AA passes).

Color values

HEX	#311F96
RGB	rgb(49, 31, 150)
HSL	hsl(249, 66%, 35%)
HSV	hsv(249, 79%, 59%)
CMYK	cmyk(67.3%, 79.3%, 0%, 41.2%)
CIE-LAB	lab(23.12, 43.54, -61.54)
CIE-LCH	lch(23.12, 75.39, 305.28°)
OKLab	oklab(35.65% 0.028 -0.1777)
OKLCH	oklch(35.65% 0.18 279)
XYZ	xyz(7.2599, 3.8343, 29.2058)
Luminance	0.0384 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311F96 #84961F

analogous

#1F4896 #311F96 #6D1F96

triadic

#311F96 #96311F #1F9631

tetradic

#311F96 #961F48 #84961F #1F966D

square

#311F96 #961F48 #84961F #1F966D

split-complementary

#311F96 #966D1F #48961F

monochromatic

#100A31 #201563 #311F96 #4229C9 #6854DC

Accessibility & contrast

On white

11.88

#311F96 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#311F96 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311F96

11.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311F96	#FFFFFF	#000000	##FFFFFF
##311F96	1.00	11.88	1.77	11.88
#FFFFFF	11.88	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C99

Deuteranopia (green-blind)

#003294

Tritanopia (blue-blind)

#00435A

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #311f96;
/* rgb */ color: rgb(49, 31, 150);
/* oklch */ color: oklch(35.7% 0.180 279.0);

Tailwind

colors: {
  custom: {
    50: '#785eb6',
    500: '#311f96',
    950: '#000000',
  },
}

SCSS

$custom: #311f96;
$custom-light: #785eb6;
$custom-dark: #000000;

JSON

{
  "hex": "#311f96",
  "rgb": {
    "r": 49,
    "g": 31,
    "b": 150
  },
  "hsl": {
    "h": 249.076,
    "s": 65.746,
    "l": 35.49
  },
  "oklch": {
    "l": 0.35652,
    "c": 0.17993,
    "h": 279
  },
  "luminance": 0.03835
}

Semantic roles & 50–950 ramp

primary

#311F96

secondary

#AEBF52

accent

#E93FCF

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0411

muted

#7C7980

Preview Lab

Preview with #311F96

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

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