#312F8A#312F8A

#312F8A is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.9% C 0.147 H 277.4°. Best body text is #FFFFFF at 11.03:1 contrast (WCAG AA passes).

Color values

HEX	#312F8A
RGB	rgb(49, 47, 138)
HSL	hsl(241, 49%, 36%)
HSV	hsv(241, 66%, 54%)
CMYK	cmyk(64.5%, 65.9%, 0%, 45.9%)
CIE-LAB	lab(25.32, 30.16, -50.48)
CIE-LCH	lch(25.32, 58.81, 300.85°)
OKLab	oklab(36.87% 0.0189 -0.1455)
OKLCH	oklch(36.87% 0.147 277.4)
XYZ	xyz(6.8691, 4.5204, 24.5504)
Luminance	0.0452 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312F8A #888A2F

analogous

#2F5B8A #312F8A #5F2F8A

triadic

#312F8A #8A312F #2F8A31

tetradic

#312F8A #8A2F5B #888A2F #2F8A5F

square

#312F8A #8A2F5B #888A2F #2F8A5F

split-complementary

#312F8A #8A5F2F #5B8A2F

monochromatic

#11102F #211F5C #312F8A #413FB8 #6A68CC

Accessibility & contrast

On white

11.03

#312F8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#312F8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312F8A

11.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312F8A	#FFFFFF	#000000	##FFFFFF
##312F8A	1.00	11.03	1.90	11.03
#FFFFFF	11.03	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00408D

Deuteranopia (green-blind)

#003888

Tritanopia (blue-blind)

#004658

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #312f8a;
/* rgb */ color: rgb(49, 47, 138);
/* oklch */ color: oklch(36.9% 0.147 277.4);

Tailwind

colors: {
  custom: {
    50: '#7468ad',
    500: '#312f8a',
    950: '#000000',
  },
}

SCSS

$custom: #312f8a;
$custom-light: #7468ad;
$custom-dark: #000000;

JSON

{
  "hex": "#312f8a",
  "rgb": {
    "r": 49,
    "g": 47,
    "b": 138
  },
  "hsl": {
    "h": 241.319,
    "s": 49.189,
    "l": 36.275
  },
  "oklch": {
    "l": 0.36869,
    "c": 0.14668,
    "h": 277.4
  },
  "luminance": 0.04521
}

Semantic roles & 50–950 ramp

primary

#312F8A

secondary

#B1B362

accent

#D94FD6

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090610

muted

#7B7A7F

Preview Lab

Preview with #312F8A

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

Preview Lab → · Contrast checker → · Palette generator →