#312C8B#312C8B

#312C8B is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.4% C 0.152 H 278.1°. Best body text is #FFFFFF at 11.27:1 contrast (WCAG AA passes).

Color values

HEX	#312C8B
RGB	rgb(49, 44, 139)
HSL	hsl(243, 52%, 36%)
HSV	hsv(243, 68%, 55%)
CMYK	cmyk(64.7%, 68.3%, 0%, 45.5%)
CIE-LAB	lab(24.70, 32.42, -52.13)
CIE-LCH	lch(24.70, 61.39, 301.88°)
OKLab	oklab(36.44% 0.0213 -0.1503)
OKLCH	oklch(36.44% 0.152 278.1)
XYZ	xyz(6.8260, 4.3179, 24.8948)
Luminance	0.0432 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312C8B #868B2C

analogous

#2C568B #312C8B #602C8B

triadic

#312C8B #8B312C #2C8B31

tetradic

#312C8B #8B2C56 #868B2C #2C8B60

square

#312C8B #8B2C56 #868B2C #2C8B60

split-complementary

#312C8B #8B602C #568B2C

monochromatic

#100F2E #211D5D #312C8B #413BB9 #6964CE

Accessibility & contrast

On white

11.27

#312C8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#312C8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312C8B

11.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312C8B	#FFFFFF	#000000	##FFFFFF
##312C8B	1.00	11.27	1.86	11.27
#FFFFFF	11.27	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F8E

Deuteranopia (green-blind)

#003789

Tritanopia (blue-blind)

#004557

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #312c8b;
/* rgb */ color: rgb(49, 44, 139);
/* oklch */ color: oklch(36.4% 0.152 278.1);

Tailwind

colors: {
  custom: {
    50: '#7566ae',
    500: '#312c8b',
    950: '#000000',
  },
}

SCSS

$custom: #312c8b;
$custom-light: #7566ae;
$custom-dark: #000000;

JSON

{
  "hex": "#312c8b",
  "rgb": {
    "r": 49,
    "g": 44,
    "b": 139
  },
  "hsl": {
    "h": 243.158,
    "s": 51.913,
    "l": 35.882
  },
  "oklch": {
    "l": 0.36442,
    "c": 0.1518,
    "h": 278.1
  },
  "luminance": 0.04318
}

Semantic roles & 50–950 ramp

primary

#312C8B

secondary

#B0B45F

accent

#DB4CD4

background

#F7F6FA

surface

#EEEBF4

border

#C9C6CE

text

#090610

muted

#7B7A7F

Preview Lab

Preview with #312C8B

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

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