#312FB8#312FB8

#312FB8 is a dark, highly saturated blue. Relative luminance 0.061; OKLCH L 41.4% C 0.206 H 273.4°. Best body text is #FFFFFF at 9.42:1 contrast (WCAG AA passes).

Color values

HEX	#312FB8
RGB	rgb(49, 47, 184)
HSL	hsl(241, 59%, 45%)
HSV	hsv(241, 74%, 72%)
CMYK	cmyk(73.4%, 74.5%, 0%, 27.8%)
CIE-LAB	lab(29.78, 45.84, -71.09)
CIE-LCH	lch(29.78, 84.59, 302.82°)
OKLab	oklab(41.42% 0.0121 -0.2057)
OKLCH	oklch(41.42% 0.206 273.4)
XYZ	xyz(10.9320, 6.1456, 45.9482)
Luminance	0.0615 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312FB8 #B6B82F

analogous

#2F71B8 #312FB8 #752FB8

triadic

#312FB8 #B8312F #2FB831

tetradic

#312FB8 #B82F71 #B6B82F #2FB875

square

#312FB8 #B82F71 #B6B82F #2FB875

split-complementary

#312FB8 #B8752F #71B82F

monochromatic

#171657 #242387 #312FB8 #5352D3 #8482DF

Accessibility & contrast

On white

9.42

#312FB8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#312FB8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312FB8

9.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312FB8	#FFFFFF	#000000	##FFFFFF
##312FB8	1.00	9.42	2.23	9.42
#FFFFFF	9.42	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DBC

Deuteranopia (green-blind)

#003FB6

Tritanopia (blue-blind)

#005771

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #312fb8;
/* rgb */ color: rgb(49, 47, 184);
/* oklch */ color: oklch(41.4% 0.206 273.4);

Tailwind

colors: {
  custom: {
    50: '#7e69cf',
    500: '#312fb8',
    950: '#000000',
  },
}

SCSS

$custom: #312fb8;
$custom-light: #7e69cf;
$custom-dark: #000000;

JSON

{
  "hex": "#312fb8",
  "rgb": {
    "r": 49,
    "g": 47,
    "b": 184
  },
  "hsl": {
    "h": 240.876,
    "s": 59.307,
    "l": 45.294
  },
  "oklch": {
    "l": 0.41419,
    "c": 0.20603,
    "h": 273.4
  },
  "luminance": 0.06147
}

Semantic roles & 50–950 ramp

primary

#312FB8

secondary

#C7C87B

accent

#E245E0

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0614

muted

#7D7A82

Preview Lab

Preview with #312FB8

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

Preview Lab → · Contrast checker → · Palette generator →