#312D89#312D89

#312D89 is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.4% C 0.148 H 278.0°. Best body text is #FFFFFF at 11.25:1 contrast (WCAG AA passes).

Color values

HEX	#312D89
RGB	rgb(49, 45, 137)
HSL	hsl(243, 51%, 36%)
HSV	hsv(243, 67%, 54%)
CMYK	cmyk(64.2%, 67.2%, 0%, 46.3%)
CIE-LAB	lab(24.75, 31.09, -50.80)
CIE-LCH	lch(24.75, 59.56, 301.47°)
OKLab	oklab(36.43% 0.0207 -0.1464)
OKLCH	oklch(36.43% 0.148 278)
XYZ	xyz(6.7189, 4.3354, 24.1448)
Luminance	0.0434 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312D89 #85892D

analogous

#2D5789 #312D89 #5F2D89

triadic

#312D89 #89312D #2D8931

tetradic

#312D89 #892D57 #85892D #2D895F

square

#312D89 #892D57 #85892D #2D895F

split-complementary

#312D89 #895F2D #57892D

monochromatic

#100F2D #211E5B #312D89 #413CB7 #6964CC

Accessibility & contrast

On white

11.25

#312D89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#312D89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312D89

11.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312D89	#FFFFFF	#000000	##FFFFFF
##312D89	1.00	11.25	1.87	11.25
#FFFFFF	11.25	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F8C

Deuteranopia (green-blind)

#003787

Tritanopia (blue-blind)

#004557

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #312d89;
/* rgb */ color: rgb(49, 45, 137);
/* oklch */ color: oklch(36.4% 0.148 278.0);

Tailwind

colors: {
  custom: {
    50: '#7466ac',
    500: '#312d89',
    950: '#000000',
  },
}

SCSS

$custom: #312d89;
$custom-light: #7466ac;
$custom-dark: #000000;

JSON

{
  "hex": "#312d89",
  "rgb": {
    "r": 49,
    "g": 45,
    "b": 137
  },
  "hsl": {
    "h": 242.609,
    "s": 50.549,
    "l": 35.686
  },
  "oklch": {
    "l": 0.36425,
    "c": 0.14783,
    "h": 278
  },
  "luminance": 0.04336
}

Semantic roles & 50–950 ramp

primary

#312D89

secondary

#AFB35F

accent

#DA4ED4

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090610

muted

#7B7A7F

Preview Lab

Preview with #312D89

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

Preview Lab → · Contrast checker → · Palette generator →