#303587#303587

#303587 is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.6% C 0.135 H 275.2°. Best body text is #FFFFFF at 10.58:1 contrast (WCAG AA passes).

Color values

HEX	#303587
RGB	rgb(48, 53, 135)
HSL	hsl(237, 48%, 36%)
HSV	hsv(237, 64%, 53%)
CMYK	cmyk(64.4%, 60.7%, 0%, 47.1%)
CIE-LAB	lab(26.52, 24.96, -46.68)
CIE-LCH	lch(26.52, 52.93, 298.14°)
OKLab	oklab(37.65% 0.0122 -0.1343)
OKLCH	oklch(37.65% 0.135 275.2)
XYZ	xyz(6.8638, 4.9233, 23.5056)
Luminance	0.0492 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303587 #878230

analogous

#306087 #303587 #563087

triadic

#303587 #873035 #358730

tetradic

#303587 #873060 #878230 #308756

square

#303587 #873060 #878230 #308756

split-complementary

#303587 #875630 #608730

monochromatic

#10122D #20235A #303587 #4047B4 #686EC9

Accessibility & contrast

On white

10.58

#303587 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#303587 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303587

10.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303587	#FFFFFF	#000000	##FFFFFF
##303587	1.00	10.58	1.98	10.58
#FFFFFF	10.58	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00438A

Deuteranopia (green-blind)

#003B85

Tritanopia (blue-blind)

#004958

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #303587;
/* rgb */ color: rgb(48, 53, 135);
/* oklch */ color: oklch(37.6% 0.135 275.2);

Tailwind

colors: {
  custom: {
    50: '#736cab',
    500: '#303587',
    950: '#000000',
  },
}

SCSS

$custom: #303587;
$custom-light: #736cab;
$custom-dark: #000000;

JSON

{
  "hex": "#303587",
  "rgb": {
    "r": 48,
    "g": 53,
    "b": 135
  },
  "hsl": {
    "h": 236.552,
    "s": 47.541,
    "l": 35.882
  },
  "oklch": {
    "l": 0.37648,
    "c": 0.13481,
    "h": 275.2
  },
  "luminance": 0.04924
}

Semantic roles & 50–950 ramp

primary

#303587

secondary

#B1AC62

accent

#CF51D7

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #303587

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

Preview Lab → · Contrast checker → · Palette generator →