#312399#312399

#312399 is a dark, vivid blue. Relative luminance 0.042; OKLCH L 36.5% C 0.180 H 278.0°. Best body text is #FFFFFF at 11.47:1 contrast (WCAG AA passes).

Color values

HEX	#312399
RGB	rgb(49, 35, 153)
HSL	hsl(247, 63%, 37%)
HSV	hsv(247, 77%, 60%)
CMYK	cmyk(68%, 77.1%, 0%, 40%)
CIE-LAB	lab(24.18, 42.39, -61.64)
CIE-LCH	lch(24.18, 74.81, 304.51°)
OKLab	oklab(36.49% 0.025 -0.1781)
OKLCH	oklch(36.49% 0.18 278)
XYZ	xyz(7.6156, 4.1543, 30.5313)
Luminance	0.0415 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312399 #8B9923

analogous

#235099 #312399 #6C2399

triadic

#312399 #993123 #239931

tetradic

#312399 #992350 #8B9923 #23996C

square

#312399 #992350 #8B9923 #23996C

split-complementary

#312399 #996C23 #509923

monochromatic

#110C35 #211867 #312399 #412ECB #6B5DDA

Accessibility & contrast

On white

11.47

#312399 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#312399 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312399

11.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312399	#FFFFFF	#000000	##FFFFFF
##312399	1.00	11.47	1.83	11.47
#FFFFFF	11.47	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E9C

Deuteranopia (green-blind)

#003597

Tritanopia (blue-blind)

#00455D

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #312399;
/* rgb */ color: rgb(49, 35, 153);
/* oklch */ color: oklch(36.5% 0.180 278.0);

Tailwind

colors: {
  custom: {
    50: '#7861b8',
    500: '#312399',
    950: '#000000',
  },
}

SCSS

$custom: #312399;
$custom-light: #7861b8;
$custom-dark: #000000;

JSON

{
  "hex": "#312399",
  "rgb": {
    "r": 49,
    "g": 35,
    "b": 153
  },
  "hsl": {
    "h": 247.119,
    "s": 62.766,
    "l": 36.863
  },
  "oklch": {
    "l": 0.3649,
    "c": 0.1798,
    "h": 278
  },
  "luminance": 0.04155
}

Semantic roles & 50–950 ramp

primary

#312399

secondary

#B2BE59

accent

#E642D2

background

#F7F5FB

surface

#EEEAF6

border

#C9C6D0

text

#0A0512

muted

#7C7981

Preview Lab

Preview with #312399

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

Preview Lab → · Contrast checker → · Palette generator →