#312FA5#312FA5

#312FA5 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.5% C 0.182 H 274.8°. Best body text is #FFFFFF at 10.09:1 contrast (WCAG AA passes).

Color values

HEX	#312FA5
RGB	rgb(49, 47, 165)
HSL	hsl(241, 56%, 42%)
HSV	hsv(241, 72%, 65%)
CMYK	cmyk(70.3%, 71.5%, 0%, 35.3%)
CIE-LAB	lab(27.85, 39.50, -62.89)
CIE-LCH	lch(27.85, 74.26, 302.13°)
OKLab	oklab(39.47% 0.0154 -0.1818)
OKLCH	oklch(39.47% 0.182 274.8)
XYZ	xyz(9.0724, 5.4018, 36.1545)
Luminance	0.0540 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312FA5 #A3A52F

analogous

#2F68A5 #312FA5 #6C2FA5

triadic

#312FA5 #A5312F #2FA531

tetradic

#312FA5 #A52F68 #A3A52F #2FA56C

square

#312FA5 #A52F68 #A3A52F #2FA56C

split-complementary

#312FA5 #A56C2F #68A52F

monochromatic

#151446 #232175 #312FA5 #4947CB #7876D8

Accessibility & contrast

On white

10.09

#312FA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#312FA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312FA5

10.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312FA5	#FFFFFF	#000000	##FFFFFF
##312FA5	1.00	10.09	2.08	10.09
#FFFFFF	10.09	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047A9

Deuteranopia (green-blind)

#003CA3

Tritanopia (blue-blind)

#005066

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #312fa5;
/* rgb */ color: rgb(49, 47, 165);
/* oklch */ color: oklch(39.5% 0.182 274.8);

Tailwind

colors: {
  custom: {
    50: '#7a69c1',
    500: '#312fa5',
    950: '#000000',
  },
}

SCSS

$custom: #312fa5;
$custom-light: #7a69c1;
$custom-dark: #000000;

JSON

{
  "hex": "#312fa5",
  "rgb": {
    "r": 49,
    "g": 47,
    "b": 165
  },
  "hsl": {
    "h": 241.017,
    "s": 55.66,
    "l": 41.569
  },
  "oklch": {
    "l": 0.39469,
    "c": 0.18243,
    "h": 274.8
  },
  "luminance": 0.05403
}

Semantic roles & 50–950 ramp

primary

#312FA5

secondary

#BFC070

accent

#DF49DC

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #312FA5

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

Preview Lab → · Contrast checker → · Palette generator →