#312AAB#312AAB

#312AAB is a dark, vivid blue. Relative luminance 0.052; OKLCH L 39.4% C 0.195 H 275.0°. Best body text is #FFFFFF at 10.24:1 contrast (WCAG AA passes).

Color values

HEX	#312AAB
RGB	rgb(49, 42, 171)
HSL	hsl(243, 61%, 42%)
HSV	hsv(243, 75%, 67%)
CMYK	cmyk(71.3%, 75.4%, 0%, 32.9%)
CIE-LAB	lab(27.43, 44.37, -67.20)
CIE-LCH	lch(27.43, 80.53, 303.44°)
OKLab	oklab(39.35% 0.0171 -0.1943)
OKLCH	oklch(39.35% 0.195 275)
XYZ	xyz(9.4428, 5.2483, 39.0356)
Luminance	0.0525 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312AAB #A4AB2A

analogous

#2A64AB #312AAB #722AAB

triadic

#312AAB #AB312A #2AAB31

tetradic

#312AAB #AB2A64 #A4AB2A #2AAB72

square

#312AAB #AB2A64 #A4AB2A #2AAB72

split-complementary

#312AAB #AB722A #64AB2A

monochromatic

#151249 #231E7A #312AAB #4942D1 #7973DD

Accessibility & contrast

On white

10.24

#312AAB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#312AAB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312AAB

10.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312AAB	#FFFFFF	#000000	##FFFFFF
##312AAB	1.00	10.24	2.05	10.24
#FFFFFF	10.24	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047AF

Deuteranopia (green-blind)

#003BA9

Tritanopia (blue-blind)

#005069

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #312aab;
/* rgb */ color: rgb(49, 42, 171);
/* oklch */ color: oklch(39.4% 0.195 275.0);

Tailwind

colors: {
  custom: {
    50: '#7c66c5',
    500: '#312aab',
    950: '#000000',
  },
}

SCSS

$custom: #312aab;
$custom-light: #7c66c5;
$custom-dark: #000000;

JSON

{
  "hex": "#312aab",
  "rgb": {
    "r": 49,
    "g": 42,
    "b": 171
  },
  "hsl": {
    "h": 243.256,
    "s": 60.563,
    "l": 41.765
  },
  "oklch": {
    "l": 0.39353,
    "c": 0.19506,
    "h": 275
  },
  "luminance": 0.05249
}

Semantic roles & 50–950 ramp

primary

#312AAB

secondary

#BFC46D

accent

#E444DB

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #312AAB

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

Preview Lab → · Contrast checker → · Palette generator →