#31339F#31339F

#31339F is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.5% C 0.170 H 274.6°. Best body text is #FFFFFF at 9.98:1 contrast (WCAG AA passes).

Color values

HEX	#31339F
RGB	rgb(49, 51, 159)
HSL	hsl(239, 53%, 41%)
HSV	hsv(239, 69%, 62%)
CMYK	cmyk(69.2%, 67.9%, 0%, 37.6%)
CIE-LAB	lab(28.18, 34.98, -58.72)
CIE-LCH	lch(28.18, 68.35, 300.78°)
OKLab	oklab(39.53% 0.0135 -0.1696)
OKLCH	oklch(39.53% 0.17 274.6)
XYZ	xyz(8.7064, 5.5230, 33.4014)
Luminance	0.0552 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31339F #9F9D31

analogous

#316A9F #31339F #66319F

triadic

#31339F #9F3133 #339F31

tetradic

#31339F #9F316A #9F9D31 #319F66

square

#31339F #9F316A #9F9D31 #319F66

split-complementary

#31339F #9F6631 #6A9F31

monochromatic

#141541 #232470 #31339F #4749C6 #7677D5

Accessibility & contrast

On white

9.98

#31339F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#31339F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31339F

9.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31339F	#FFFFFF	#000000	##FFFFFF
##31339F	1.00	9.98	2.10	9.98
#FFFFFF	9.98	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	9.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048A2

Deuteranopia (green-blind)

#003D9D

Tritanopia (blue-blind)

#005064

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #31339f;
/* rgb */ color: rgb(49, 51, 159);
/* oklch */ color: oklch(39.5% 0.170 274.6);

Tailwind

colors: {
  custom: {
    50: '#786bbc',
    500: '#31339f',
    950: '#000000',
  },
}

SCSS

$custom: #31339f;
$custom-light: #786bbc;
$custom-dark: #000000;

JSON

{
  "hex": "#31339f",
  "rgb": {
    "r": 49,
    "g": 51,
    "b": 159
  },
  "hsl": {
    "h": 238.909,
    "s": 52.885,
    "l": 40.784
  },
  "oklch": {
    "l": 0.39529,
    "c": 0.17013,
    "h": 274.6
  },
  "luminance": 0.05524
}

Semantic roles & 50–950 ramp

primary

#31339F

secondary

#BDBB6F

accent

#DA4CDC

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #31339F

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

Preview Lab → · Contrast checker → · Palette generator →