#312B8B#312B8B

#312B8B is a dark, vivid blue. Relative luminance 0.042; OKLCH L 36.3% C 0.153 H 278.3°. Best body text is #FFFFFF at 11.36:1 contrast (WCAG AA passes).

Color values

HEX	#312B8B
RGB	rgb(49, 43, 139)
HSL	hsl(244, 53%, 36%)
HSV	hsv(244, 69%, 55%)
CMYK	cmyk(64.7%, 69.1%, 0%, 45.5%)
CIE-LAB	lab(24.46, 33.05, -52.51)
CIE-LCH	lch(24.46, 62.05, 302.18°)
OKLab	oklab(36.27% 0.0221 -0.1514)
OKLCH	oklch(36.27% 0.153 278.3)
XYZ	xyz(6.7892, 4.2443, 24.8825)
Luminance	0.0425 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312B8B #858B2B

analogous

#2B558B #312B8B #612B8B

triadic

#312B8B #8B312B #2B8B31

tetradic

#312B8B #8B2B55 #858B2B #2B8B61

square

#312B8B #8B2B55 #858B2B #2B8B61

split-complementary

#312B8B #8B612B #558B2B

monochromatic

#100E2E #211D5C #312B8B #4139BA #6962CE

Accessibility & contrast

On white

11.36

#312B8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#312B8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312B8B

11.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312B8B	#FFFFFF	#000000	##FFFFFF
##312B8B	1.00	11.36	1.85	11.36
#FFFFFF	11.36	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E8E

Deuteranopia (green-blind)

#003689

Tritanopia (blue-blind)

#004457

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #312b8b;
/* rgb */ color: rgb(49, 43, 139);
/* oklch */ color: oklch(36.3% 0.153 278.3);

Tailwind

colors: {
  custom: {
    50: '#7565ae',
    500: '#312b8b',
    950: '#000000',
  },
}

SCSS

$custom: #312b8b;
$custom-light: #7565ae;
$custom-dark: #000000;

JSON

{
  "hex": "#312b8b",
  "rgb": {
    "r": 49,
    "g": 43,
    "b": 139
  },
  "hsl": {
    "h": 243.75,
    "s": 52.747,
    "l": 35.686
  },
  "oklch": {
    "l": 0.36273,
    "c": 0.15303,
    "h": 278.3
  },
  "luminance": 0.04245
}

Semantic roles & 50–950 ramp

primary

#312B8B

secondary

#AFB55D

accent

#DC4CD3

background

#F7F6FA

surface

#EEEBF4

border

#C9C6CE

text

#090510

muted

#7B7A7F

Preview Lab

Preview with #312B8B

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

Preview Lab → · Contrast checker → · Palette generator →