#31499E#31499E

#31499E is a dark, vivid blue. Relative luminance 0.079; OKLCH L 43.6% C 0.141 H 268.2°. Best body text is #FFFFFF at 8.15:1 contrast (WCAG AA passes).

Color values

HEX	#31499E
RGB	rgb(49, 73, 158)
HSL	hsl(227, 53%, 41%)
HSV	hsv(227, 69%, 62%)
CMYK	cmyk(69%, 53.8%, 0%, 38%)
CIE-LAB	lab(33.74, 20.19, -49.05)
CIE-LCH	lch(33.74, 53.04, 292.38°)
OKLab	oklab(43.63% -0.0045 -0.141)
OKLCH	oklch(43.63% 0.141 268.2)
XYZ	xyz(9.8186, 7.8857, 33.3458)
Luminance	0.0789 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31499E #9E8631

analogous

#317F9E #31499E #4F319E

triadic

#31499E #9E3149 #499E31

tetradic

#31499E #9E317F #9E8631 #319E4F

square

#31499E #9E317F #9E8631 #319E4F

split-complementary

#31499E #9E4F31 #7F9E31

monochromatic

#141E41 #23336F #31499E #4662C6 #758AD4

Accessibility & contrast

On white

8.15

#31499E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#31499E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31499E

8.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31499E	#FFFFFF	#000000	##FFFFFF
##31499E	1.00	8.15	2.58	8.15
#FFFFFF	8.15	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F55A1

Deuteranopia (green-blind)

#004B9C

Tritanopia (blue-blind)

#005D6C

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #31499e;
/* rgb */ color: rgb(49, 73, 158);
/* oklch */ color: oklch(43.6% 0.141 268.2);

Tailwind

colors: {
  custom: {
    50: '#767bbb',
    500: '#31499e',
    950: '#000000',
  },
}

SCSS

$custom: #31499e;
$custom-light: #767bbb;
$custom-dark: #000000;

JSON

{
  "hex": "#31499e",
  "rgb": {
    "r": 49,
    "g": 73,
    "b": 158
  },
  "hsl": {
    "h": 226.789,
    "s": 52.657,
    "l": 40.588
  },
  "oklch": {
    "l": 0.4363,
    "c": 0.14103,
    "h": 268.2
  },
  "luminance": 0.07887
}

Semantic roles & 50–950 ramp

primary

#31499E

secondary

#BCAB6E

accent

#BC4CDC

background

#F7F7FB

surface

#EEEDF6

border

#C9C8D0

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #31499E

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

Preview Lab → · Contrast checker → · Palette generator →