#312CA5#312CA5

#312CA5 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 39.0% C 0.186 H 275.3°. Best body text is #FFFFFF at 10.32:1 contrast (WCAG AA passes).

Color values

HEX	#312CA5
RGB	rgb(49, 44, 165)
HSL	hsl(242, 58%, 41%)
HSV	hsv(242, 73%, 65%)
CMYK	cmyk(70.3%, 73.3%, 0%, 35.3%)
CIE-LAB	lab(27.21, 41.26, -63.94)
CIE-LCH	lch(27.21, 76.10, 302.84°)
OKLab	oklab(39.01% 0.0172 -0.1848)
OKLCH	oklch(39.01% 0.186 275.3)
XYZ	xyz(8.9566, 5.1701, 36.1159)
Luminance	0.0517 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312CA5 #A0A52C

analogous

#2C63A5 #312CA5 #6D2CA5

triadic

#312CA5 #A5312C #2CA531

tetradic

#312CA5 #A52C63 #A0A52C #2CA56D

square

#312CA5 #A52C63 #A0A52C #2CA56D

split-complementary

#312CA5 #A56D2C #63A52C

monochromatic

#141244 #231F75 #312CA5 #4742CD #7672D9

Accessibility & contrast

On white

10.32

#312CA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#312CA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312CA5

10.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312CA5	#FFFFFF	#000000	##FFFFFF
##312CA5	1.00	10.32	2.03	10.32
#FFFFFF	10.32	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0046A9

Deuteranopia (green-blind)

#003BA3

Tritanopia (blue-blind)

#004E66

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #312ca5;
/* rgb */ color: rgb(49, 44, 165);
/* oklch */ color: oklch(39.0% 0.186 275.3);

Tailwind

colors: {
  custom: {
    50: '#7a67c1',
    500: '#312ca5',
    950: '#000000',
  },
}

SCSS

$custom: #312ca5;
$custom-light: #7a67c1;
$custom-dark: #000000;

JSON

{
  "hex": "#312ca5",
  "rgb": {
    "r": 49,
    "g": 44,
    "b": 165
  },
  "hsl": {
    "h": 242.479,
    "s": 57.895,
    "l": 40.98
  },
  "oklch": {
    "l": 0.39014,
    "c": 0.18562,
    "h": 275.3
  },
  "luminance": 0.05171
}

Semantic roles & 50–950 ramp

primary

#312CA5

secondary

#BDC16C

accent

#E147DB

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #312CA5

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

Preview Lab → · Contrast checker → · Palette generator →