#312DA5#312DA5

#312DA5 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 39.2% C 0.185 H 275.2°. Best body text is #FFFFFF at 10.25:1 contrast (WCAG AA passes).

Color values

HEX	#312DA5
RGB	rgb(49, 45, 165)
HSL	hsl(242, 57%, 41%)
HSV	hsv(242, 73%, 65%)
CMYK	cmyk(70.3%, 72.7%, 0%, 35.3%)
CIE-LAB	lab(27.42, 40.68, -63.59)
CIE-LCH	lch(27.42, 75.49, 302.61°)
OKLab	oklab(39.16% 0.0166 -0.1838)
OKLCH	oklch(39.16% 0.185 275.2)
XYZ	xyz(8.9943, 5.2455, 36.1285)
Luminance	0.0525 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312DA5 #A1A52D

analogous

#2D65A5 #312DA5 #6D2DA5

triadic

#312DA5 #A5312D #2DA531

tetradic

#312DA5 #A52D65 #A1A52D #2DA56D

square

#312DA5 #A52D65 #A1A52D #2DA56D

split-complementary

#312DA5 #A56D2D #65A52D

monochromatic

#141345 #232075 #312DA5 #4843CC #7773D9

Accessibility & contrast

On white

10.25

#312DA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#312DA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312DA5

10.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312DA5	#FFFFFF	#000000	##FFFFFF
##312DA5	1.00	10.25	2.05	10.25
#FFFFFF	10.25	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0046A9

Deuteranopia (green-blind)

#003BA3

Tritanopia (blue-blind)

#004F66

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #312da5;
/* rgb */ color: rgb(49, 45, 165);
/* oklch */ color: oklch(39.2% 0.185 275.2);

Tailwind

colors: {
  custom: {
    50: '#7a67c1',
    500: '#312da5',
    950: '#000000',
  },
}

SCSS

$custom: #312da5;
$custom-light: #7a67c1;
$custom-dark: #000000;

JSON

{
  "hex": "#312da5",
  "rgb": {
    "r": 49,
    "g": 45,
    "b": 165
  },
  "hsl": {
    "h": 242,
    "s": 57.143,
    "l": 41.176
  },
  "oklch": {
    "l": 0.39163,
    "c": 0.18457,
    "h": 275.2
  },
  "luminance": 0.05246
}

Semantic roles & 50–950 ramp

primary

#312DA5

secondary

#BEC16D

accent

#E047DB

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #312DA5

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

Preview Lab → · Contrast checker → · Palette generator →