#303D87#303D87

#303D87 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.3% C 0.124 H 272.0°. Best body text is #FFFFFF at 9.80:1 contrast (WCAG AA passes).

Color values

HEX	#303D87
RGB	rgb(48, 61, 135)
HSL	hsl(231, 48%, 36%)
HSV	hsv(231, 64%, 53%)
CMYK	cmyk(64.4%, 54.8%, 0%, 47.1%)
CIE-LAB	lab(28.68, 19.55, -43.17)
CIE-LCH	lch(28.68, 47.39, 294.37°)
OKLab	oklab(39.26% 0.0043 -0.1238)
OKLCH	oklch(39.26% 0.124 272)
XYZ	xyz(7.2594, 5.7145, 23.6374)
Luminance	0.0571 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303D87 #877A30

analogous

#306887 #303D87 #4E3087

triadic

#303D87 #87303D #3D8730

tetradic

#303D87 #873068 #877A30 #30874E

square

#303D87 #873068 #877A30 #30874E

split-complementary

#303D87 #874E30 #688730

monochromatic

#10142D #20295A #303D87 #4051B4 #6877C9

Accessibility & contrast

On white

9.80

#303D87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#303D87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303D87

9.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303D87	#FFFFFF	#000000	##FFFFFF
##303D87	1.00	9.80	2.14	9.80
#FFFFFF	9.80	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D488A

Deuteranopia (green-blind)

#004085

Tritanopia (blue-blind)

#004E5C

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #303d87;
/* rgb */ color: rgb(48, 61, 135);
/* oklch */ color: oklch(39.3% 0.124 272.0);

Tailwind

colors: {
  custom: {
    50: '#7272aa',
    500: '#303d87',
    950: '#000000',
  },
}

SCSS

$custom: #303d87;
$custom-light: #7272aa;
$custom-dark: #000000;

JSON

{
  "hex": "#303d87",
  "rgb": {
    "r": 48,
    "g": 61,
    "b": 135
  },
  "hsl": {
    "h": 231.034,
    "s": 47.541,
    "l": 35.882
  },
  "oklch": {
    "l": 0.39264,
    "c": 0.12392,
    "h": 272
  },
  "luminance": 0.05715
}

Semantic roles & 50–950 ramp

primary

#303D87

secondary

#B1A562

accent

#C351D7

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #303D87

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

Preview Lab → · Contrast checker → · Palette generator →