#312B8A#312B8A

#312B8A is a dark, vivid blue. Relative luminance 0.042; OKLCH L 36.2% C 0.152 H 278.4°. Best body text is #FFFFFF at 11.39:1 contrast (WCAG AA passes).

Color values

HEX	#312B8A
RGB	rgb(49, 43, 138)
HSL	hsl(244, 52%, 35%)
HSV	hsv(244, 69%, 54%)
CMYK	cmyk(64.5%, 68.8%, 0%, 45.9%)
CIE-LAB	lab(24.37, 32.70, -52.04)
CIE-LCH	lch(24.37, 61.46, 302.15°)
OKLab	oklab(36.18% 0.0223 -0.15)
OKLCH	oklch(36.18% 0.152 278.4)
XYZ	xyz(6.7165, 4.2152, 24.4995)
Luminance	0.0422 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312B8A #848A2B

analogous

#2B558A #312B8A #602B8A

triadic

#312B8A #8A312B #2B8A31

tetradic

#312B8A #8A2B55 #848A2B #2B8A60

square

#312B8A #8A2B55 #848A2B #2B8A60

split-complementary

#312B8A #8A602B #558A2B

monochromatic

#100E2D #201C5B #312B8A #423AB9 #6861CE

Accessibility & contrast

On white

11.39

#312B8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#312B8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312B8A

11.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312B8A	#FFFFFF	#000000	##FFFFFF
##312B8A	1.00	11.39	1.84	11.39
#FFFFFF	11.39	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E8D

Deuteranopia (green-blind)

#003688

Tritanopia (blue-blind)

#004456

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #312b8a;
/* rgb */ color: rgb(49, 43, 138);
/* oklch */ color: oklch(36.2% 0.152 278.4);

Tailwind

colors: {
  custom: {
    50: '#7465ad',
    500: '#312b8a',
    950: '#000000',
  },
}

SCSS

$custom: #312b8a;
$custom-light: #7465ad;
$custom-dark: #000000;

JSON

{
  "hex": "#312b8a",
  "rgb": {
    "r": 49,
    "g": 43,
    "b": 138
  },
  "hsl": {
    "h": 243.789,
    "s": 52.486,
    "l": 35.49
  },
  "oklch": {
    "l": 0.36178,
    "c": 0.15168,
    "h": 278.4
  },
  "luminance": 0.04216
}

Semantic roles & 50–950 ramp

primary

#312B8A

secondary

#AEB45D

accent

#DC4CD3

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090510

muted

#7B7A7F

Preview Lab

Preview with #312B8A

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

Preview Lab → · Contrast checker → · Palette generator →