#303399#303399

#303399 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.9% C 0.162 H 274.6°. Best body text is #FFFFFF at 10.20:1 contrast (WCAG AA passes).

Color values

HEX	#303399
RGB	rgb(48, 51, 153)
HSL	hsl(238, 52%, 39%)
HSV	hsv(238, 69%, 60%)
CMYK	cmyk(68.6%, 66.7%, 0%, 40%)
CIE-LAB	lab(27.56, 32.73, -56.08)
CIE-LCH	lch(27.56, 64.93, 300.27°)
OKLab	oklab(38.9% 0.0129 -0.1619)
OKLCH	oklch(38.9% 0.162 274.6)
XYZ	xyz(8.1506, 5.2952, 30.7234)
Luminance	0.0530 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303399 #999630

analogous

#306899 #303399 #623099

triadic

#303399 #993033 #339930

tetradic

#303399 #993068 #999630 #309962

square

#303399 #993068 #999630 #309962

split-complementary

#303399 #996230 #689930

monochromatic

#13143C #21236A #303399 #4246C4 #7174D2

Accessibility & contrast

On white

10.20

#303399 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#303399 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303399

10.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303399	#FFFFFF	#000000	##FFFFFF
##303399	1.00	10.20	2.06	10.20
#FFFFFF	10.20	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00469C

Deuteranopia (green-blind)

#003C97

Tritanopia (blue-blind)

#004E61

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #303399;
/* rgb */ color: rgb(48, 51, 153);
/* oklch */ color: oklch(38.9% 0.162 274.6);

Tailwind

colors: {
  custom: {
    50: '#776bb8',
    500: '#303399',
    950: '#000000',
  },
}

SCSS

$custom: #303399;
$custom-light: #776bb8;
$custom-dark: #000000;

JSON

{
  "hex": "#303399",
  "rgb": {
    "r": 48,
    "g": 51,
    "b": 153
  },
  "hsl": {
    "h": 238.286,
    "s": 52.239,
    "l": 39.412
  },
  "oklch": {
    "l": 0.38895,
    "c": 0.16239,
    "h": 274.6
  },
  "luminance": 0.05296
}

Semantic roles & 50–950 ramp

primary

#303399

secondary

#BAB86B

accent

#D84CDC

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0611

muted

#7C7A80

Preview Lab

Preview with #303399

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

Preview Lab → · Contrast checker → · Palette generator →