#312A9D#312A9D

#312A9D is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.9% C 0.178 H 276.4°. Best body text is #FFFFFF at 10.78:1 contrast (WCAG AA passes).

Color values

HEX	#312A9D
RGB	rgb(49, 42, 157)
HSL	hsl(244, 58%, 39%)
HSV	hsv(244, 73%, 62%)
CMYK	cmyk(68.8%, 73.2%, 0%, 38.4%)
CIE-LAB	lab(25.99, 39.76, -61.10)
CIE-LCH	lch(25.99, 72.89, 303.05°)
OKLab	oklab(37.9% 0.0199 -0.1765)
OKLCH	oklch(37.9% 0.178 276.4)
XYZ	xyz(8.1784, 4.7425, 32.3761)
Luminance	0.0474 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312A9D #969D2A

analogous

#2A5D9D #312A9D #6B2A9D

triadic

#312A9D #9D312A #2A9D31

tetradic

#312A9D #9D2A5D #969D2A #2A9D6B

square

#312A9D #9D2A5D #969D2A #2A9D6B

split-complementary

#312A9D #9D6B2A #5D9D2A

monochromatic

#13103C #221D6D #312A9D #433ACA #716AD7

Accessibility & contrast

On white

10.78

#312A9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#312A9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312A9D

10.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312A9D	#FFFFFF	#000000	##FFFFFF
##312A9D	1.00	10.78	1.95	10.78
#FFFFFF	10.78	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042A0

Deuteranopia (green-blind)

#00389B

Tritanopia (blue-blind)

#004A61

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #312a9d;
/* rgb */ color: rgb(49, 42, 157);
/* oklch */ color: oklch(37.9% 0.178 276.4);

Tailwind

colors: {
  custom: {
    50: '#7965bb',
    500: '#312a9d',
    950: '#000000',
  },
}

SCSS

$custom: #312a9d;
$custom-light: #7965bb;
$custom-dark: #000000;

JSON

{
  "hex": "#312a9d",
  "rgb": {
    "r": 49,
    "g": 42,
    "b": 157
  },
  "hsl": {
    "h": 243.652,
    "s": 57.789,
    "l": 39.02
  },
  "oklch": {
    "l": 0.37898,
    "c": 0.17764,
    "h": 276.4
  },
  "luminance": 0.04743
}

Semantic roles & 50–950 ramp

primary

#312A9D

secondary

#B8BE65

accent

#E147D8

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #312A9D

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

Preview Lab → · Contrast checker → · Palette generator →