#31309F#31309F

#31309F is a dark, vivid blue. Relative luminance 0.053; OKLCH L 39.0% C 0.174 H 275.2°. Best body text is #FFFFFF at 10.22:1 contrast (WCAG AA passes).

Color values

HEX	#31309F
RGB	rgb(49, 48, 159)
HSL	hsl(241, 54%, 41%)
HSV	hsv(241, 70%, 62%)
CMYK	cmyk(69.2%, 69.8%, 0%, 37.6%)
CIE-LAB	lab(27.49, 36.84, -59.85)
CIE-LCH	lch(27.49, 70.28, 301.61°)
OKLab	oklab(39.03% 0.0156 -0.1729)
OKLCH	oklch(39.03% 0.174 275.2)
XYZ	xyz(8.5795, 5.2693, 33.3591)
Luminance	0.0527 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31309F #9E9F30

analogous

#30669F #31309F #69309F

triadic

#31309F #9F3130 #309F31

tetradic

#31309F #9F3066 #9E9F30 #309F69

square

#31309F #9F3066 #9E9F30 #309F69

split-complementary

#31309F #9F6930 #669F30

monochromatic

#141441 #232270 #31309F #4645C7 #7574D5

Accessibility & contrast

On white

10.22

#31309F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#31309F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31309F

10.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31309F	#FFFFFF	#000000	##FFFFFF
##31309F	1.00	10.22	2.05	10.22
#FFFFFF	10.22	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0046A2

Deuteranopia (green-blind)

#003C9D

Tritanopia (blue-blind)

#004E63

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #31309f;
/* rgb */ color: rgb(49, 48, 159);
/* oklch */ color: oklch(39.0% 0.174 275.2);

Tailwind

colors: {
  custom: {
    50: '#7969bc',
    500: '#31309f',
    950: '#000000',
  },
}

SCSS

$custom: #31309f;
$custom-light: #7969bc;
$custom-dark: #000000;

JSON

{
  "hex": "#31309f",
  "rgb": {
    "r": 49,
    "g": 48,
    "b": 159
  },
  "hsl": {
    "h": 240.541,
    "s": 53.623,
    "l": 40.588
  },
  "oklch": {
    "l": 0.39032,
    "c": 0.1736,
    "h": 275.2
  },
  "luminance": 0.0527
}

Semantic roles & 50–950 ramp

primary

#31309F

secondary

#BCBD6E

accent

#DD4BDC

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #31309F

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

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