#312D90#312D90

#312D90 is a dark, vivid blue. Relative luminance 0.045; OKLCH L 37.1% C 0.157 H 277.3°. Best body text is #FFFFFF at 11.00:1 contrast (WCAG AA passes).

Color values

HEX	#312D90
RGB	rgb(49, 45, 144)
HSL	hsl(242, 52%, 37%)
HSV	hsv(242, 69%, 56%)
CMYK	cmyk(66%, 68.7%, 0%, 43.5%)
CIE-LAB	lab(25.39, 33.52, -54.09)
CIE-LCH	lch(25.39, 63.64, 301.78°)
OKLab	oklab(37.09% 0.0199 -0.156)
OKLCH	oklch(37.09% 0.157 277.3)
XYZ	xyz(7.2374, 4.5428, 26.8756)
Luminance	0.0454 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312D90 #8C902D

analogous

#2D5B90 #312D90 #632D90

triadic

#312D90 #90312D #2D9031

tetradic

#312D90 #902D5B #8C902D #2D9063

square

#312D90 #902D5B #8C902D #2D9063

split-complementary

#312D90 #90632D #5B902D

monochromatic

#111033 #211E61 #312D90 #413CBF #6C68D0

Accessibility & contrast

On white

11.00

#312D90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#312D90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312D90

11.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312D90	#FFFFFF	#000000	##FFFFFF
##312D90	1.00	11.00	1.91	11.00
#FFFFFF	11.00	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004093

Deuteranopia (green-blind)

#00388E

Tritanopia (blue-blind)

#00475A

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #312d90;
/* rgb */ color: rgb(49, 45, 144);
/* oklch */ color: oklch(37.1% 0.157 277.3);

Tailwind

colors: {
  custom: {
    50: '#7667b1',
    500: '#312d90',
    950: '#000000',
  },
}

SCSS

$custom: #312d90;
$custom-light: #7667b1;
$custom-dark: #000000;

JSON

{
  "hex": "#312d90",
  "rgb": {
    "r": 49,
    "g": 45,
    "b": 144
  },
  "hsl": {
    "h": 242.424,
    "s": 52.381,
    "l": 37.059
  },
  "oklch": {
    "l": 0.37086,
    "c": 0.15731,
    "h": 277.3
  },
  "luminance": 0.04543
}

Semantic roles & 50–950 ramp

primary

#312D90

secondary

#B3B662

accent

#DC4CD6

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090611

muted

#7B7A80

Preview Lab

Preview with #312D90

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

Preview Lab → · Contrast checker → · Palette generator →