#31389B#31389B

#31389B is a dark, vivid blue. Relative luminance 0.058; OKLCH L 40.0% C 0.159 H 273.6°. Best body text is #FFFFFF at 9.68:1 contrast (WCAG AA passes).

Color values

HEX	#31389B
RGB	rgb(49, 56, 155)
HSL	hsl(236, 52%, 40%)
HSV	hsv(236, 68%, 61%)
CMYK	cmyk(68.4%, 63.9%, 0%, 39.2%)
CIE-LAB	lab(29.02, 30.36, -54.90)
CIE-LCH	lch(29.02, 62.74, 298.94°)
OKLab	oklab(40.04% 0.0101 -0.1584)
OKLCH	oklch(40.04% 0.159 273.6)
XYZ	xyz(8.5952, 5.8471, 31.6796)
Luminance	0.0585 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31389B #9B9431

analogous

#316D9B #31389B #5F319B

triadic

#31389B #9B3138 #389B31

tetradic

#31389B #9B316D #9B9431 #319B5F

square

#31389B #9B316D #9B9431 #319B5F

split-complementary

#31389B #9B5F31 #6D9B31

monochromatic

#14163E #22276D #31389B #454DC4 #737AD3

Accessibility & contrast

On white

9.68

#31389B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#31389B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31389B

9.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31389B	#FFFFFF	#000000	##FFFFFF
##31389B	1.00	9.68	2.17	9.68
#FFFFFF	9.68	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00499E

Deuteranopia (green-blind)

#004099

Tritanopia (blue-blind)

#005164

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #31389b;
/* rgb */ color: rgb(49, 56, 155);
/* oklch */ color: oklch(40.0% 0.159 273.6);

Tailwind

colors: {
  custom: {
    50: '#776eb9',
    500: '#31389b',
    950: '#000000',
  },
}

SCSS

$custom: #31389b;
$custom-light: #776eb9;
$custom-dark: #000000;

JSON

{
  "hex": "#31389b",
  "rgb": {
    "r": 49,
    "g": 56,
    "b": 155
  },
  "hsl": {
    "h": 236.038,
    "s": 51.961,
    "l": 40
  },
  "oklch": {
    "l": 0.40037,
    "c": 0.15868,
    "h": 273.6
  },
  "luminance": 0.05848
}

Semantic roles & 50–950 ramp

primary

#31389B

secondary

#BBB66D

accent

#D24CDB

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #31389B

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

Preview Lab → · Contrast checker → · Palette generator →