#31398A#31398A

#31398A is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.8% C 0.133 H 274.1°. Best body text is #FFFFFF at 10.08:1 contrast (WCAG AA passes).

Color values

HEX	#31398A
RGB	rgb(49, 57, 138)
HSL	hsl(235, 48%, 37%)
HSV	hsv(235, 64%, 54%)
CMYK	cmyk(64.5%, 58.7%, 0%, 45.9%)
CIE-LAB	lab(27.88, 23.54, -46.32)
CIE-LCH	lch(27.88, 51.96, 296.94°)
OKLab	oklab(38.76% 0.0096 -0.1331)
OKLCH	oklch(38.76% 0.133 274.1)
XYZ	xyz(7.3157, 5.4136, 24.6992)
Luminance	0.0541 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31398A #8A8231

analogous

#31668A #31398A #56318A

triadic

#31398A #8A3139 #398A31

tetradic

#31398A #8A3166 #8A8231 #318A56

square

#31398A #8A3166 #8A8231 #318A56

split-complementary

#31398A #8A5631 #668A31

monochromatic

#111430 #21265D #31398A #414CB7 #6B74CA

Accessibility & contrast

On white

10.08

#31398A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#31398A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31398A

10.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31398A	#FFFFFF	#000000	##FFFFFF
##31398A	1.00	10.08	2.08	10.08
#FFFFFF	10.08	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00468D

Deuteranopia (green-blind)

#003E88

Tritanopia (blue-blind)

#004C5B

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #31398a;
/* rgb */ color: rgb(49, 57, 138);
/* oklch */ color: oklch(38.8% 0.133 274.1);

Tailwind

colors: {
  custom: {
    50: '#736fad',
    500: '#31398a',
    950: '#000000',
  },
}

SCSS

$custom: #31398a;
$custom-light: #736fad;
$custom-dark: #000000;

JSON

{
  "hex": "#31398a",
  "rgb": {
    "r": 49,
    "g": 57,
    "b": 138
  },
  "hsl": {
    "h": 234.607,
    "s": 47.594,
    "l": 36.667
  },
  "oklch": {
    "l": 0.38756,
    "c": 0.13348,
    "h": 274.1
  },
  "luminance": 0.05414
}

Semantic roles & 50–950 ramp

primary

#31398A

secondary

#B2AB65

accent

#CB51D7

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #31398A

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

Preview Lab → · Contrast checker → · Palette generator →