#31428F#31428F

#31428F is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.0% C 0.129 H 270.4°. Best body text is #FFFFFF at 9.10:1 contrast (WCAG AA passes).

Color values

HEX	#31428F
RGB	rgb(49, 66, 143)
HSL	hsl(229, 49%, 38%)
HSV	hsv(229, 66%, 56%)
CMYK	cmyk(65.7%, 53.8%, 0%, 43.9%)
CIE-LAB	lab(30.72, 19.31, -44.81)
CIE-LCH	lch(30.72, 48.80, 293.31°)
OKLab	oklab(41% 0.0009 -0.1286)
OKLCH	oklch(41% 0.129 270.4)
XYZ	xyz(8.1711, 6.5318, 26.8114)
Luminance	0.0653 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31428F #8F7E31

analogous

#31718F #31428F #4F318F

triadic

#31428F #8F3142 #428F31

tetradic

#31428F #8F3171 #8F7E31 #318F4F

square

#31428F #8F3171 #8F7E31 #318F4F

split-complementary

#31428F #8F4F31 #718F31

monochromatic

#121834 #212D61 #31428F #4157BD #6D7FCD

Accessibility & contrast

On white

9.10

#31428F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#31428F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31428F

9.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31428F	#FFFFFF	#000000	##FFFFFF
##31428F	1.00	9.10	2.31	9.10
#FFFFFF	9.10	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#114D92

Deuteranopia (green-blind)

#00448D

Tritanopia (blue-blind)

#005462

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #31428f;
/* rgb */ color: rgb(49, 66, 143);
/* oklch */ color: oklch(41.0% 0.129 270.4);

Tailwind

colors: {
  custom: {
    50: '#7476b0',
    500: '#31428f',
    950: '#000000',
  },
}

SCSS

$custom: #31428f;
$custom-light: #7476b0;
$custom-dark: #000000;

JSON

{
  "hex": "#31428f",
  "rgb": {
    "r": 49,
    "g": 66,
    "b": 143
  },
  "hsl": {
    "h": 229.149,
    "s": 48.958,
    "l": 37.647
  },
  "oklch": {
    "l": 0.41,
    "c": 0.1286,
    "h": 270.4
  },
  "luminance": 0.06533
}

Semantic roles & 50–950 ramp

primary

#31428F

secondary

#B5A767

accent

#C04FD9

background

#F7F7FA

surface

#EDEDF5

border

#C8C8CF

text

#090810

muted

#7B7B7F

Preview Lab

Preview with #31428F

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

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