#312C8F#312C8F

#312C8F is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.8% C 0.157 H 277.6°. Best body text is #FFFFFF at 11.13:1 contrast (WCAG AA passes).

Color values

HEX	#312C8F
RGB	rgb(49, 44, 143)
HSL	hsl(243, 53%, 37%)
HSV	hsv(243, 69%, 56%)
CMYK	cmyk(65.7%, 69.2%, 0%, 43.9%)
CIE-LAB	lab(25.07, 33.80, -54.01)
CIE-LCH	lch(25.07, 63.71, 302.04°)
OKLab	oklab(36.82% 0.0208 -0.1558)
OKLCH	oklch(36.82% 0.157 277.6)
XYZ	xyz(7.1236, 4.4369, 26.4623)
Luminance	0.0444 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312C8F #8A8F2C

analogous

#2C598F #312C8F #632C8F

triadic

#312C8F #8F312C #2C8F31

tetradic

#312C8F #8F2C59 #8A8F2C #2C8F63

square

#312C8F #8F2C59 #8A8F2C #2C8F63

split-complementary

#312C8F #8F632C #598F2C

monochromatic

#110F31 #211E60 #312C8F #413ABE #6B66D0

Accessibility & contrast

On white

11.13

#312C8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#312C8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312C8F

11.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312C8F	#FFFFFF	#000000	##FFFFFF
##312C8F	1.00	11.13	1.89	11.13
#FFFFFF	11.13	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004092

Deuteranopia (green-blind)

#00378D

Tritanopia (blue-blind)

#004659

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #312c8f;
/* rgb */ color: rgb(49, 44, 143);
/* oklch */ color: oklch(36.8% 0.157 277.6);

Tailwind

colors: {
  custom: {
    50: '#7566b1',
    500: '#312c8f',
    950: '#000000',
  },
}

SCSS

$custom: #312c8f;
$custom-light: #7566b1;
$custom-dark: #000000;

JSON

{
  "hex": "#312c8f",
  "rgb": {
    "r": 49,
    "g": 44,
    "b": 143
  },
  "hsl": {
    "h": 243.03,
    "s": 52.941,
    "l": 36.667
  },
  "oklch": {
    "l": 0.36823,
    "c": 0.15718,
    "h": 277.6
  },
  "luminance": 0.04438
}

Semantic roles & 50–950 ramp

primary

#312C8F

secondary

#B2B661

accent

#DC4BD5

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090611

muted

#7B7A80

Preview Lab

Preview with #312C8F

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

Preview Lab → · Contrast checker → · Palette generator →