#31429B#31429B

#31429B is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.0% C 0.146 H 270.6°. Best body text is #FFFFFF at 8.81:1 contrast (WCAG AA passes).

Color values

HEX	#31429B
RGB	rgb(49, 66, 155)
HSL	hsl(230, 52%, 40%)
HSV	hsv(230, 68%, 61%)
CMYK	cmyk(68.4%, 57.4%, 0%, 39.2%)
CIE-LAB	lab(31.61, 23.75, -50.68)
CIE-LCH	lch(31.61, 55.97, 295.11°)
OKLab	oklab(41.96% 0.0016 -0.1459)
OKLCH	oklch(41.96% 0.146 270.6)
XYZ	xyz(9.1292, 6.9151, 31.8576)
Luminance	0.0692 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31429B #9B8A31

analogous

#31779B #31429B #55319B

triadic

#31429B #9B3142 #429B31

tetradic

#31429B #9B3177 #9B8A31 #319B55

square

#31429B #9B3177 #9B8A31 #319B55

split-complementary

#31429B #9B5531 #779B31

monochromatic

#141A3E #222E6D #31429B #4559C4 #7383D3

Accessibility & contrast

On white

8.81

#31429B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#31429B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31429B

8.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31429B	#FFFFFF	#000000	##FFFFFF
##31429B	1.00	8.81	2.38	8.81
#FFFFFF	8.81	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004F9E

Deuteranopia (green-blind)

#004699

Tritanopia (blue-blind)

#005868

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #31429b;
/* rgb */ color: rgb(49, 66, 155);
/* oklch */ color: oklch(42.0% 0.146 270.6);

Tailwind

colors: {
  custom: {
    50: '#7676b9',
    500: '#31429b',
    950: '#000000',
  },
}

SCSS

$custom: #31429b;
$custom-light: #7676b9;
$custom-dark: #000000;

JSON

{
  "hex": "#31429b",
  "rgb": {
    "r": 49,
    "g": 66,
    "b": 155
  },
  "hsl": {
    "h": 230.377,
    "s": 51.961,
    "l": 40
  },
  "oklch": {
    "l": 0.41957,
    "c": 0.14588,
    "h": 270.6
  },
  "luminance": 0.06916
}

Semantic roles & 50–950 ramp

primary

#31429B

secondary

#BBAE6D

accent

#C44CDB

background

#F7F7FB

surface

#EEEDF6

border

#C9C8D0

text

#0A0811

muted

#7C7B80

Preview Lab

Preview with #31429B

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

Preview Lab → · Contrast checker → · Palette generator →