#303583#303583

#303583 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.3% C 0.129 H 275.4°. Best body text is #FFFFFF at 10.70:1 contrast (WCAG AA passes).

Color values

HEX	#303583
RGB	rgb(48, 53, 131)
HSL	hsl(236, 46%, 35%)
HSV	hsv(236, 63%, 51%)
CMYK	cmyk(63.4%, 59.5%, 0%, 48.6%)
CIE-LAB	lab(26.19, 23.51, -44.70)
CIE-LCH	lch(26.19, 50.50, 297.74°)
OKLab	oklab(37.31% 0.0122 -0.1284)
OKLCH	oklch(37.31% 0.129 275.4)
XYZ	xyz(6.5874, 4.8128, 22.0501)
Luminance	0.0481 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303583 #837E30

analogous

#305E83 #303583 #553083

triadic

#303583 #833035 #358330

tetradic

#303583 #83305E #837E30 #308355

square

#303583 #83305E #837E30 #308355

split-complementary

#303583 #835530 #5E8330

monochromatic

#0F1129 #202356 #303583 #4047B0 #666CC7

Accessibility & contrast

On white

10.70

#303583 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#303583 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303583

10.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303583	#FFFFFF	#000000	##FFFFFF
##303583	1.00	10.70	1.96	10.70
#FFFFFF	10.70	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004286

Deuteranopia (green-blind)

#003A81

Tritanopia (blue-blind)

#004856

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #303583;
/* rgb */ color: rgb(48, 53, 131);
/* oklch */ color: oklch(37.3% 0.129 275.4);

Tailwind

colors: {
  custom: {
    50: '#726ca8',
    500: '#303583',
    950: '#000000',
  },
}

SCSS

$custom: #303583;
$custom-light: #726ca8;
$custom-dark: #000000;

JSON

{
  "hex": "#303583",
  "rgb": {
    "r": 48,
    "g": 53,
    "b": 131
  },
  "hsl": {
    "h": 236.386,
    "s": 46.369,
    "l": 35.098
  },
  "oklch": {
    "l": 0.37309,
    "c": 0.12903,
    "h": 275.4
  },
  "luminance": 0.04813
}

Semantic roles & 50–950 ramp

primary

#303583

secondary

#AEAA61

accent

#CE52D6

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #303583

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

Preview Lab → · Contrast checker → · Palette generator →