#303699#303699

#303699 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.4% C 0.159 H 273.8°. Best body text is #FFFFFF at 9.94:1 contrast (WCAG AA passes).

Color values

HEX	#303699
RGB	rgb(48, 54, 153)
HSL	hsl(237, 52%, 39%)
HSV	hsv(237, 69%, 60%)
CMYK	cmyk(68.6%, 64.7%, 0%, 40%)
CIE-LAB	lab(28.29, 30.80, -54.88)
CIE-LCH	lch(28.29, 62.93, 299.30°)
OKLab	oklab(39.43% 0.0106 -0.1583)
OKLCH	oklch(39.43% 0.159 273.8)
XYZ	xyz(8.2859, 5.5659, 30.7685)
Luminance	0.0557 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303699 #999330

analogous

#306B99 #303699 #5E3099

triadic

#303699 #993036 #369930

tetradic

#303699 #99306B #999330 #30995E

square

#303699 #99306B #999330 #30995E

split-complementary

#303699 #995E30 #6B9930

monochromatic

#13153C #21266A #303699 #424AC4 #7177D2

Accessibility & contrast

On white

9.94

#303699 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#303699 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303699

9.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303699	#FFFFFF	#000000	##FFFFFF
##303699	1.00	9.94	2.11	9.94
#FFFFFF	9.94	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00489C

Deuteranopia (green-blind)

#003E97

Tritanopia (blue-blind)

#004F62

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #303699;
/* rgb */ color: rgb(48, 54, 153);
/* oklch */ color: oklch(39.4% 0.159 273.8);

Tailwind

colors: {
  custom: {
    50: '#766db8',
    500: '#303699',
    950: '#000000',
  },
}

SCSS

$custom: #303699;
$custom-light: #766db8;
$custom-dark: #000000;

JSON

{
  "hex": "#303699",
  "rgb": {
    "r": 48,
    "g": 54,
    "b": 153
  },
  "hsl": {
    "h": 236.571,
    "s": 52.239,
    "l": 39.412
  },
  "oklch": {
    "l": 0.39428,
    "c": 0.15871,
    "h": 273.8
  },
  "luminance": 0.05567
}

Semantic roles & 50–950 ramp

primary

#303699

secondary

#BAB66B

accent

#D34CDC

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0711

muted

#7C7A80

Preview Lab

Preview with #303699

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

Preview Lab → · Contrast checker → · Palette generator →