#31328B#31328B

#31328B is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.5% C 0.144 H 276.4°. Best body text is #FFFFFF at 10.72:1 contrast (WCAG AA passes).

Color values

HEX	#31328B
RGB	rgb(49, 50, 139)
HSL	hsl(239, 48%, 37%)
HSV	hsv(239, 65%, 55%)
CMYK	cmyk(64.7%, 64%, 0%, 45.5%)
CIE-LAB	lab(26.15, 28.56, -49.75)
CIE-LCH	lch(26.15, 57.37, 299.85°)
OKLab	oklab(37.5% 0.0161 -0.1433)
OKLCH	oklch(37.5% 0.144 276.4)
XYZ	xyz(7.0659, 4.7977, 24.9748)
Luminance	0.0480 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31328B #8B8A31

analogous

#315F8B #31328B #5D318B

triadic

#31328B #8B3132 #328B31

tetradic

#31328B #8B315F #8B8A31 #318B5D

square

#31328B #8B315F #8B8A31 #318B5D

split-complementary

#31328B #8B5D31 #5F8B31

monochromatic

#111131 #21225E #31328B #4142B8 #6B6CCB

Accessibility & contrast

On white

10.72

#31328B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#31328B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31328B

10.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31328B	#FFFFFF	#000000	##FFFFFF
##31328B	1.00	10.72	1.96	10.72
#FFFFFF	10.72	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00428E

Deuteranopia (green-blind)

#003A89

Tritanopia (blue-blind)

#004859

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #31328b;
/* rgb */ color: rgb(49, 50, 139);
/* oklch */ color: oklch(37.5% 0.144 276.4);

Tailwind

colors: {
  custom: {
    50: '#746aae',
    500: '#31328b',
    950: '#000000',
  },
}

SCSS

$custom: #31328b;
$custom-light: #746aae;
$custom-dark: #000000;

JSON

{
  "hex": "#31328b",
  "rgb": {
    "r": 49,
    "g": 50,
    "b": 139
  },
  "hsl": {
    "h": 239.333,
    "s": 47.872,
    "l": 36.863
  },
  "oklch": {
    "l": 0.37502,
    "c": 0.1442,
    "h": 276.4
  },
  "luminance": 0.04798
}

Semantic roles & 50–950 ramp

primary

#31328B

secondary

#B2B265

accent

#D650D7

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090610

muted

#7B7A7F

Preview Lab

Preview with #31328B

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

Preview Lab → · Contrast checker → · Palette generator →