#303289#303289

#303289 is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.3% C 0.142 H 276.1°. Best body text is #FFFFFF at 10.81:1 contrast (WCAG AA passes).

Color values

HEX	#303289
RGB	rgb(48, 50, 137)
HSL	hsl(239, 48%, 36%)
HSV	hsv(239, 65%, 54%)
CMYK	cmyk(65%, 63.5%, 0%, 46.3%)
CIE-LAB	lab(25.91, 27.68, -48.91)
CIE-LCH	lch(25.91, 56.20, 299.50°)
OKLab	oklab(37.25% 0.015 -0.1408)
OKLCH	oklch(37.25% 0.142 276.1)
XYZ	xyz(6.8734, 4.7152, 24.2100)
Luminance	0.0472 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303289 #898730

analogous

#305F89 #303289 #5B3089

triadic

#303289 #893032 #328930

tetradic

#303289 #89305F #898730 #30895B

square

#303289 #89305F #898730 #30895B

split-complementary

#303289 #895B30 #5F8930

monochromatic

#10112E #20215C #303289 #4043B6 #696BCA

Accessibility & contrast

On white

10.81

#303289 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#303289 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303289

10.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303289	#FFFFFF	#000000	##FFFFFF
##303289	1.00	10.81	1.94	10.81
#FFFFFF	10.81	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00418C

Deuteranopia (green-blind)

#003987

Tritanopia (blue-blind)

#004858

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #303289;
/* rgb */ color: rgb(48, 50, 137);
/* oklch */ color: oklch(37.3% 0.142 276.1);

Tailwind

colors: {
  custom: {
    50: '#736aac',
    500: '#303289',
    950: '#000000',
  },
}

SCSS

$custom: #303289;
$custom-light: #736aac;
$custom-dark: #000000;

JSON

{
  "hex": "#303289",
  "rgb": {
    "r": 48,
    "g": 50,
    "b": 137
  },
  "hsl": {
    "h": 238.652,
    "s": 48.108,
    "l": 36.275
  },
  "oklch": {
    "l": 0.37251,
    "c": 0.14164,
    "h": 276.1
  },
  "luminance": 0.04716
}

Semantic roles & 50–950 ramp

primary

#303289

secondary

#B2B063

accent

#D550D8

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090610

muted

#7B7A7F

Preview Lab

Preview with #303289

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

Preview Lab → · Contrast checker → · Palette generator →