#312FA6#312FA6

#312FA6 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.6% C 0.184 H 274.8°. Best body text is #FFFFFF at 10.06:1 contrast (WCAG AA passes).

Color values

HEX	#312FA6
RGB	rgb(49, 47, 166)
HSL	hsl(241, 56%, 42%)
HSV	hsv(241, 72%, 65%)
CMYK	cmyk(70.5%, 71.7%, 0%, 34.9%)
CIE-LAB	lab(27.95, 39.84, -63.33)
CIE-LCH	lch(27.95, 74.82, 302.17°)
OKLab	oklab(39.57% 0.0152 -0.1831)
OKLCH	oklch(39.57% 0.184 274.8)
XYZ	xyz(9.1638, 5.4383, 36.6358)
Luminance	0.0544 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312FA6 #A4A62F

analogous

#2F69A6 #312FA6 #6C2FA6

triadic

#312FA6 #A6312F #2FA631

tetradic

#312FA6 #A62F69 #A4A62F #2FA66C

square

#312FA6 #A62F69 #A4A62F #2FA66C

split-complementary

#312FA6 #A66C2F #69A62F

monochromatic

#151447 #232176 #312FA6 #4947CB #7977D8

Accessibility & contrast

On white

10.06

#312FA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#312FA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312FA6

10.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312FA6	#FFFFFF	#000000	##FFFFFF
##312FA6	1.00	10.06	2.09	10.06
#FFFFFF	10.06	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047AA

Deuteranopia (green-blind)

#003CA4

Tritanopia (blue-blind)

#005067

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #312fa6;
/* rgb */ color: rgb(49, 47, 166);
/* oklch */ color: oklch(39.6% 0.184 274.8);

Tailwind

colors: {
  custom: {
    50: '#7a69c2',
    500: '#312fa6',
    950: '#000000',
  },
}

SCSS

$custom: #312fa6;
$custom-light: #7a69c2;
$custom-dark: #000000;

JSON

{
  "hex": "#312fa6",
  "rgb": {
    "r": 49,
    "g": 47,
    "b": 166
  },
  "hsl": {
    "h": 241.008,
    "s": 55.869,
    "l": 41.765
  },
  "oklch": {
    "l": 0.39569,
    "c": 0.1837,
    "h": 274.8
  },
  "luminance": 0.05439
}

Semantic roles & 50–950 ramp

primary

#312FA6

secondary

#BFC170

accent

#DF49DD

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #312FA6

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

Preview Lab → · Contrast checker → · Palette generator →