#312D8F#312D8F

#312D8F is a dark, vivid blue. Relative luminance 0.045; OKLCH L 37.0% C 0.156 H 277.4°. Best body text is #FFFFFF at 11.04:1 contrast (WCAG AA passes).

Color values

HEX	#312D8F
RGB	rgb(49, 45, 143)
HSL	hsl(242, 52%, 37%)
HSV	hsv(242, 69%, 56%)
CMYK	cmyk(65.7%, 68.5%, 0%, 43.9%)
CIE-LAB	lab(25.30, 33.17, -53.63)
CIE-LCH	lch(25.30, 63.06, 301.74°)
OKLab	oklab(36.99% 0.02 -0.1547)
OKLCH	oklch(36.99% 0.156 277.4)
XYZ	xyz(7.1613, 4.5123, 26.4749)
Luminance	0.0451 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312D8F #8B8F2D

analogous

#2D5A8F #312D8F #622D8F

triadic

#312D8F #8F312D #2D8F31

tetradic

#312D8F #8F2D5A #8B8F2D #2D8F62

square

#312D8F #8F2D5A #8B8F2D #2D8F62

split-complementary

#312D8F #8F622D #5A8F2D

monochromatic

#111032 #211E60 #312D8F #413CBE #6B67CF

Accessibility & contrast

On white

11.04

#312D8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#312D8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312D8F

11.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312D8F	#FFFFFF	#000000	##FFFFFF
##312D8F	1.00	11.04	1.90	11.04
#FFFFFF	11.04	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004092

Deuteranopia (green-blind)

#00388D

Tritanopia (blue-blind)

#00475A

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #312d8f;
/* rgb */ color: rgb(49, 45, 143);
/* oklch */ color: oklch(37.0% 0.156 277.4);

Tailwind

colors: {
  custom: {
    50: '#7566b1',
    500: '#312d8f',
    950: '#000000',
  },
}

SCSS

$custom: #312d8f;
$custom-light: #7566b1;
$custom-dark: #000000;

JSON

{
  "hex": "#312d8f",
  "rgb": {
    "r": 49,
    "g": 45,
    "b": 143
  },
  "hsl": {
    "h": 242.449,
    "s": 52.128,
    "l": 36.863
  },
  "oklch": {
    "l": 0.36991,
    "c": 0.15598,
    "h": 277.4
  },
  "luminance": 0.04513
}

Semantic roles & 50–950 ramp

primary

#312D8F

secondary

#B2B662

accent

#DC4CD6

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090611

muted

#7B7A80

Preview Lab

Preview with #312D8F

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

Preview Lab → · Contrast checker → · Palette generator →