#31509C#31509C

#31509C is a dark, vivid blue. Relative luminance 0.088; OKLCH L 45.0% C 0.129 H 265.0°. Best body text is #FFFFFF at 7.61:1 contrast (WCAG AA passes).

Color values

HEX	#31509C
RGB	rgb(49, 80, 156)
HSL	hsl(223, 52%, 40%)
HSV	hsv(223, 69%, 61%)
CMYK	cmyk(68.6%, 48.7%, 0%, 38.8%)
CIE-LAB	lab(35.58, 14.78, -44.89)
CIE-LCH	lch(35.58, 47.26, 288.23°)
OKLab	oklab(44.98% -0.0113 -0.1286)
OKLCH	oklch(44.98% 0.129 265)
XYZ	xyz(10.1339, 8.7896, 32.6085)
Luminance	0.0879 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31509C #9C7D31

analogous

#31859C #31509C #48319C

triadic

#31509C #9C3150 #509C31

tetradic

#31509C #9C3185 #9C7D31 #319C48

square

#31509C #9C3185 #9C7D31 #319C48

split-complementary

#31509C #9C4831 #859C31

monochromatic

#14203F #22386D #31509C #456AC5 #7490D3

Accessibility & contrast

On white

7.61

#31509C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.76

#31509C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31509C

7.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31509C	#FFFFFF	#000000	##FFFFFF
##31509C	1.00	7.61	2.76	7.61
#FFFFFF	7.61	1.00	21.00	1.00
#000000	2.76	21.00	1.00	21.00
##FFFFFF	7.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#28599F

Deuteranopia (green-blind)

#0E4F9A

Tritanopia (blue-blind)

#00626E

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #31509c;
/* rgb */ color: rgb(49, 80, 156);
/* oklch */ color: oklch(45.0% 0.129 265.0);

Tailwind

colors: {
  custom: {
    50: '#7680ba',
    500: '#31509c',
    950: '#000000',
  },
}

SCSS

$custom: #31509c;
$custom-light: #7680ba;
$custom-dark: #000000;

JSON

{
  "hex": "#31509c",
  "rgb": {
    "r": 49,
    "g": 80,
    "b": 156
  },
  "hsl": {
    "h": 222.617,
    "s": 52.195,
    "l": 40.196
  },
  "oklch": {
    "l": 0.44977,
    "c": 0.12911,
    "h": 265
  },
  "luminance": 0.08791
}

Semantic roles & 50–950 ramp

primary

#31509C

secondary

#BBA56D

accent

#B24CDC

background

#F7F7FB

surface

#EEEEF6

border

#C9C9D0

text

#090A11

muted

#7B7C80

Preview Lab

Preview with #31509C

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

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