#303D89#303D89

#303D89 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.4% C 0.127 H 272.0°. Best body text is #FFFFFF at 9.75:1 contrast (WCAG AA passes).

Color values

HEX	#303D89
RGB	rgb(48, 61, 137)
HSL	hsl(231, 48%, 36%)
HSV	hsv(231, 65%, 54%)
CMYK	cmyk(65%, 55.5%, 0%, 46.3%)
CIE-LAB	lab(28.83, 20.29, -44.17)
CIE-LCH	lch(28.83, 48.61, 294.67°)
OKLab	oklab(39.42% 0.0044 -0.1268)
OKLCH	oklch(39.42% 0.127 272)
XYZ	xyz(7.4015, 5.7714, 24.3860)
Luminance	0.0577 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303D89 #897C30

analogous

#306A89 #303D89 #503089

triadic

#303D89 #89303D #3D8930

tetradic

#303D89 #89306A #897C30 #308950

square

#303D89 #89306A #897C30 #308950

split-complementary

#303D89 #895030 #6A8930

monochromatic

#10152E #20295C #303D89 #4051B6 #6977CA

Accessibility & contrast

On white

9.75

#303D89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#303D89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303D89

9.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303D89	#FFFFFF	#000000	##FFFFFF
##303D89	1.00	9.75	2.15	9.75
#FFFFFF	9.75	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#08488C

Deuteranopia (green-blind)

#004087

Tritanopia (blue-blind)

#004F5D

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #303d89;
/* rgb */ color: rgb(48, 61, 137);
/* oklch */ color: oklch(39.4% 0.127 272.0);

Tailwind

colors: {
  custom: {
    50: '#7272ac',
    500: '#303d89',
    950: '#000000',
  },
}

SCSS

$custom: #303d89;
$custom-light: #7272ac;
$custom-dark: #000000;

JSON

{
  "hex": "#303d89",
  "rgb": {
    "r": 48,
    "g": 61,
    "b": 137
  },
  "hsl": {
    "h": 231.236,
    "s": 48.108,
    "l": 36.275
  },
  "oklch": {
    "l": 0.39422,
    "c": 0.12687,
    "h": 272
  },
  "luminance": 0.05772
}

Semantic roles & 50–950 ramp

primary

#303D89

secondary

#B2A663

accent

#C450D8

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #303D89

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

Preview Lab → · Contrast checker → · Palette generator →