#31339C#31339C

#31339C is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.2% C 0.166 H 274.8°. Best body text is #FFFFFF at 10.08:1 contrast (WCAG AA passes).

Color values

HEX	#31339C
RGB	rgb(49, 51, 156)
HSL	hsl(239, 52%, 40%)
HSV	hsv(239, 69%, 61%)
CMYK	cmyk(68.6%, 67.3%, 0%, 38.8%)
CIE-LAB	lab(27.90, 33.93, -57.35)
CIE-LCH	lch(27.90, 66.63, 300.61°)
OKLab	oklab(39.24% 0.0139 -0.1656)
OKLCH	oklch(39.24% 0.166 274.8)
XYZ	xyz(8.4492, 5.4202, 32.0470)
Luminance	0.0542 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31339C #9C9A31

analogous

#31689C #31339C #65319C

triadic

#31339C #9C3133 #339C31

tetradic

#31339C #9C3168 #9C9A31 #319C65

square

#31339C #9C3168 #9C9A31 #319C65

split-complementary

#31339C #9C6531 #689C31

monochromatic

#14153F #22246D #31339C #4548C5 #7476D3

Accessibility & contrast

On white

10.08

#31339C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#31339C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31339C

10.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31339C	#FFFFFF	#000000	##FFFFFF
##31339C	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)

#00479F

Deuteranopia (green-blind)

#003D9A

Tritanopia (blue-blind)

#004F63

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #31339c;
/* rgb */ color: rgb(49, 51, 156);
/* oklch */ color: oklch(39.2% 0.166 274.8);

Tailwind

colors: {
  custom: {
    50: '#786bba',
    500: '#31339c',
    950: '#000000',
  },
}

SCSS

$custom: #31339c;
$custom-light: #786bba;
$custom-dark: #000000;

JSON

{
  "hex": "#31339c",
  "rgb": {
    "r": 49,
    "g": 51,
    "b": 156
  },
  "hsl": {
    "h": 238.879,
    "s": 52.195,
    "l": 40.196
  },
  "oklch": {
    "l": 0.39244,
    "c": 0.16615,
    "h": 274.8
  },
  "luminance": 0.05421
}

Semantic roles & 50–950 ramp

primary

#31339C

secondary

#BBBA6D

accent

#D94CDC

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #31339C

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

Preview Lab → · Contrast checker → · Palette generator →