#312B97#312B97

#312B97 is a dark, vivid blue. Relative luminance 0.046; OKLCH L 37.4% C 0.169 H 276.9°. Best body text is #FFFFFF at 10.92:1 contrast (WCAG AA passes).

Color values

HEX	#312B97
RGB	rgb(49, 43, 151)
HSL	hsl(243, 56%, 38%)
HSV	hsv(243, 72%, 59%)
CMYK	cmyk(67.5%, 71.5%, 0%, 40.8%)
CIE-LAB	lab(25.61, 37.15, -58.05)
CIE-LCH	lch(25.61, 68.92, 302.61°)
OKLab	oklab(37.45% 0.0203 -0.1676)
OKLCH	oklch(37.45% 0.169 276.9)
XYZ	xyz(7.7146, 4.6144, 29.7563)
Luminance	0.0461 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312B97 #91972B

analogous

#2B5B97 #312B97 #672B97

triadic

#312B97 #97312B #2B9731

tetradic

#312B97 #972B5B #91972B #2B9767

square

#312B97 #972B5B #91972B #2B9767

split-complementary

#312B97 #97672B #5B972B

monochromatic

#121038 #221D67 #312B97 #4139C7 #6E68D4

Accessibility & contrast

On white

10.92

#312B97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#312B97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312B97

10.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312B97	#FFFFFF	#000000	##FFFFFF
##312B97	1.00	10.92	1.92	10.92
#FFFFFF	10.92	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00419A

Deuteranopia (green-blind)

#003895

Tritanopia (blue-blind)

#00495E

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #312b97;
/* rgb */ color: rgb(49, 43, 151);
/* oklch */ color: oklch(37.4% 0.169 276.9);

Tailwind

colors: {
  custom: {
    50: '#7765b7',
    500: '#312b97',
    950: '#000000',
  },
}

SCSS

$custom: #312b97;
$custom-light: #7765b7;
$custom-dark: #000000;

JSON

{
  "hex": "#312b97",
  "rgb": {
    "r": 49,
    "g": 43,
    "b": 151
  },
  "hsl": {
    "h": 243.333,
    "s": 55.67,
    "l": 38.039
  },
  "oklch": {
    "l": 0.37445,
    "c": 0.16885,
    "h": 276.9
  },
  "luminance": 0.04615
}

Semantic roles & 50–950 ramp

primary

#312B97

secondary

#B6BB63

accent

#DF49D7

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0611

muted

#7C7A80

Preview Lab

Preview with #312B97

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

Preview Lab → · Contrast checker → · Palette generator →