#31479E#31479E

#31479E is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.2% C 0.144 H 268.9°. Best body text is #FFFFFF at 8.31:1 contrast (WCAG AA passes).

Color values

HEX	#31479E
RGB	rgb(49, 71, 158)
HSL	hsl(228, 53%, 41%)
HSV	hsv(228, 69%, 62%)
CMYK	cmyk(69%, 55.1%, 0%, 38%)
CIE-LAB	lab(33.19, 21.53, -49.94)
CIE-LCH	lch(33.19, 54.38, 293.32°)
OKLab	oklab(43.22% -0.0027 -0.1436)
OKLCH	oklch(43.22% 0.144 268.9)
XYZ	xyz(9.6893, 7.6271, 33.3027)
Luminance	0.0763 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31479E #9E8831

analogous

#317D9E #31479E #51319E

triadic

#31479E #9E3147 #479E31

tetradic

#31479E #9E317D #9E8831 #319E51

square

#31479E #9E317D #9E8831 #319E51

split-complementary

#31479E #9E5131 #7D9E31

monochromatic

#141D41 #23326F #31479E #4660C6 #7588D4

Accessibility & contrast

On white

8.31

#31479E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#31479E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31479E

8.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31479E	#FFFFFF	#000000	##FFFFFF
##31479E	1.00	8.31	2.53	8.31
#FFFFFF	8.31	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0353A1

Deuteranopia (green-blind)

#00499C

Tritanopia (blue-blind)

#005C6B

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #31479e;
/* rgb */ color: rgb(49, 71, 158);
/* oklch */ color: oklch(43.2% 0.144 268.9);

Tailwind

colors: {
  custom: {
    50: '#7779bb',
    500: '#31479e',
    950: '#000000',
  },
}

SCSS

$custom: #31479e;
$custom-light: #7779bb;
$custom-dark: #000000;

JSON

{
  "hex": "#31479e",
  "rgb": {
    "r": 49,
    "g": 71,
    "b": 158
  },
  "hsl": {
    "h": 227.89,
    "s": 52.657,
    "l": 40.588
  },
  "oklch": {
    "l": 0.43215,
    "c": 0.14363,
    "h": 268.9
  },
  "luminance": 0.07628
}

Semantic roles & 50–950 ramp

primary

#31479E

secondary

#BCAD6E

accent

#BF4CDC

background

#F7F7FB

surface

#EEEDF6

border

#C9C8D0

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #31479E

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

Preview Lab → · Contrast checker → · Palette generator →