#31539B#31539B

#31539B is a mid, vivid blue. Relative luminance 0.092; OKLCH L 45.6% C 0.124 H 263.3°. Best body text is #FFFFFF at 7.39:1 contrast (WCAG AA passes).

Color values

HEX	#31539B
RGB	rgb(49, 83, 155)
HSL	hsl(221, 52%, 40%)
HSV	hsv(221, 68%, 61%)
CMYK	cmyk(68.4%, 46.5%, 0%, 39.2%)
CIE-LAB	lab(36.38, 12.42, -43.00)
CIE-LCH	lch(36.38, 44.76, 286.11°)
OKLab	oklab(45.57% -0.0144 -0.123)
OKLCH	oklch(45.57% 0.124 263.3)
XYZ	xyz(10.2742, 9.2050, 32.2393)
Luminance	0.0921 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31539B #9B7931

analogous

#31889B #31539B #44319B

triadic

#31539B #9B3153 #539B31

tetradic

#31539B #9B3188 #9B7931 #319B44

square

#31539B #9B3188 #9B7931 #319B44

split-complementary

#31539B #9B4431 #889B31

monochromatic

#14213E #223A6D #31539B #456EC4 #7392D3

Accessibility & contrast

On white

7.39

#31539B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.84

#31539B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31539B

7.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31539B	#FFFFFF	#000000	##FFFFFF
##31539B	1.00	7.39	2.84	7.39
#FFFFFF	7.39	1.00	21.00	1.00
#000000	2.84	21.00	1.00	21.00
##FFFFFF	7.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F5B9E

Deuteranopia (green-blind)

#1B519A

Tritanopia (blue-blind)

#00646F

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #31539b;
/* rgb */ color: rgb(49, 83, 155);
/* oklch */ color: oklch(45.6% 0.124 263.3);

Tailwind

colors: {
  custom: {
    50: '#7582b9',
    500: '#31539b',
    950: '#000000',
  },
}

SCSS

$custom: #31539b;
$custom-light: #7582b9;
$custom-dark: #000000;

JSON

{
  "hex": "#31539b",
  "rgb": {
    "r": 49,
    "g": 83,
    "b": 155
  },
  "hsl": {
    "h": 220.755,
    "s": 51.961,
    "l": 40
  },
  "oklch": {
    "l": 0.45569,
    "c": 0.12385,
    "h": 263.3
  },
  "luminance": 0.09206
}

Semantic roles & 50–950 ramp

primary

#31539B

secondary

#BBA26D

accent

#AE4CDB

background

#F7F7FB

surface

#EEEEF6

border

#C9C9D0

text

#090A11

muted

#7B7C80

Preview Lab

Preview with #31539B

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

Preview Lab → · Contrast checker → · Palette generator →