#31398C#31398C

#31398C is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.9% C 0.136 H 274.0°. Best body text is #FFFFFF at 10.03:1 contrast (WCAG AA passes).

Color values

HEX	#31398C
RGB	rgb(49, 57, 140)
HSL	hsl(235, 48%, 37%)
HSV	hsv(235, 65%, 55%)
CMYK	cmyk(65%, 59.3%, 0%, 45.1%)
CIE-LAB	lab(28.04, 24.27, -47.30)
CIE-LCH	lch(28.04, 53.16, 297.16°)
OKLab	oklab(38.92% 0.0096 -0.136)
OKLCH	oklch(38.92% 0.136 274)
XYZ	xyz(7.4618, 5.4720, 25.4688)
Luminance	0.0547 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31398C #8C8431

analogous

#31678C #31398C #57318C

triadic

#31398C #8C3139 #398C31

tetradic

#31398C #8C3167 #8C8431 #318C57

square

#31398C #8C3167 #8C8431 #318C57

split-complementary

#31398C #8C5731 #678C31

monochromatic

#111431 #21275F #31398C #414BB9 #6C74CC

Accessibility & contrast

On white

10.03

#31398C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#31398C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31398C

10.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31398C	#FFFFFF	#000000	##FFFFFF
##31398C	1.00	10.03	2.09	10.03
#FFFFFF	10.03	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00468F

Deuteranopia (green-blind)

#003E8A

Tritanopia (blue-blind)

#004D5C

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #31398c;
/* rgb */ color: rgb(49, 57, 140);
/* oklch */ color: oklch(38.9% 0.136 274.0);

Tailwind

colors: {
  custom: {
    50: '#746fae',
    500: '#31398c',
    950: '#000000',
  },
}

SCSS

$custom: #31398c;
$custom-light: #746fae;
$custom-dark: #000000;

JSON

{
  "hex": "#31398c",
  "rgb": {
    "r": 49,
    "g": 57,
    "b": 140
  },
  "hsl": {
    "h": 234.725,
    "s": 48.148,
    "l": 37.059
  },
  "oklch": {
    "l": 0.38923,
    "c": 0.13637,
    "h": 274
  },
  "luminance": 0.05473
}

Semantic roles & 50–950 ramp

primary

#31398C

secondary

#B3AC66

accent

#CC50D8

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #31398C

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

Preview Lab → · Contrast checker → · Palette generator →