#312B8D#312B8D

#312B8D is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.5% C 0.156 H 278.1°. Best body text is #FFFFFF at 11.29:1 contrast (WCAG AA passes).

Color values

HEX	#312B8D
RGB	rgb(49, 43, 141)
HSL	hsl(244, 53%, 36%)
HSV	hsv(244, 70%, 55%)
CMYK	cmyk(65.2%, 69.5%, 0%, 44.7%)
CIE-LAB	lab(24.65, 33.73, -53.45)
CIE-LCH	lch(24.65, 63.21, 302.26°)
OKLab	oklab(36.46% 0.0219 -0.1542)
OKLCH	oklch(36.46% 0.156 278.1)
XYZ	xyz(6.9367, 4.3033, 25.6592)
Luminance	0.0430 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312B8D #878D2B

analogous

#2B568D #312B8D #622B8D

triadic

#312B8D #8D312B #2B8D31

tetradic

#312B8D #8D2B56 #878D2B #2B8D62

square

#312B8D #8D2B56 #878D2B #2B8D62

split-complementary

#312B8D #8D622B #568D2B

monochromatic

#100E2F #211D5E #312B8D #4139BC #6A63CF

Accessibility & contrast

On white

11.29

#312B8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#312B8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312B8D

11.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312B8D	#FFFFFF	#000000	##FFFFFF
##312B8D	1.00	11.29	1.86	11.29
#FFFFFF	11.29	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F90

Deuteranopia (green-blind)

#00368B

Tritanopia (blue-blind)

#004558

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #312b8d;
/* rgb */ color: rgb(49, 43, 141);
/* oklch */ color: oklch(36.5% 0.156 278.1);

Tailwind

colors: {
  custom: {
    50: '#7565af',
    500: '#312b8d',
    950: '#000000',
  },
}

SCSS

$custom: #312b8d;
$custom-light: #7565af;
$custom-dark: #000000;

JSON

{
  "hex": "#312b8d",
  "rgb": {
    "r": 49,
    "g": 43,
    "b": 141
  },
  "hsl": {
    "h": 243.673,
    "s": 53.261,
    "l": 36.078
  },
  "oklch": {
    "l": 0.36465,
    "c": 0.15571,
    "h": 278.1
  },
  "luminance": 0.04304
}

Semantic roles & 50–950 ramp

primary

#312B8D

secondary

#B0B65E

accent

#DD4BD4

background

#F7F6FA

surface

#EEEBF5

border

#C9C6CF

text

#090510

muted

#7B7A7F

Preview Lab

Preview with #312B8D

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

Preview Lab → · Contrast checker → · Palette generator →