#312DAB#312DAB

#312DAB is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.8% C 0.192 H 274.6°. Best body text is #FFFFFF at 10.03:1 contrast (WCAG AA passes).

Color values

HEX	#312DAB
RGB	rgb(49, 45, 171)
HSL	hsl(242, 58%, 42%)
HSV	hsv(242, 74%, 67%)
CMYK	cmyk(71.3%, 73.7%, 0%, 32.9%)
CIE-LAB	lab(28.03, 42.68, -66.21)
CIE-LCH	lch(28.03, 78.77, 302.81°)
OKLab	oklab(39.78% 0.0155 -0.1914)
OKLCH	oklch(39.78% 0.192 274.6)
XYZ	xyz(9.5533, 5.4691, 39.0724)
Luminance	0.0547 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312DAB #A7AB2D

analogous

#2D68AB #312DAB #702DAB

triadic

#312DAB #AB312D #2DAB31

tetradic

#312DAB #AB2D68 #A7AB2D #2DAB70

square

#312DAB #AB2D68 #A7AB2D #2DAB70

split-complementary

#312DAB #AB702D #68AB2D

monochromatic

#15144A #23207B #312DAB #4B47CE #7A77DB

Accessibility & contrast

On white

10.03

#312DAB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#312DAB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312DAB

10.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312DAB	#FFFFFF	#000000	##FFFFFF
##312DAB	1.00	10.03	2.09	10.03
#FFFFFF	10.03	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048AF

Deuteranopia (green-blind)

#003CA9

Tritanopia (blue-blind)

#005169

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #312dab;
/* rgb */ color: rgb(49, 45, 171);
/* oklch */ color: oklch(39.8% 0.192 274.6);

Tailwind

colors: {
  custom: {
    50: '#7c68c5',
    500: '#312dab',
    950: '#000000',
  },
}

SCSS

$custom: #312dab;
$custom-light: #7c68c5;
$custom-dark: #000000;

JSON

{
  "hex": "#312dab",
  "rgb": {
    "r": 49,
    "g": 45,
    "b": 171
  },
  "hsl": {
    "h": 241.905,
    "s": 58.333,
    "l": 42.353
  },
  "oklch": {
    "l": 0.39779,
    "c": 0.19207,
    "h": 274.6
  },
  "luminance": 0.0547
}

Semantic roles & 50–950 ramp

primary

#312DAB

secondary

#C1C371

accent

#E246DD

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #312DAB

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

Preview Lab → · Contrast checker → · Palette generator →