#303166#303166

#303166 is a dark, moderate blue. Relative luminance 0.038; OKLCH L 34.2% C 0.091 H 279.6°. Best body text is #FFFFFF at 11.95:1 contrast (WCAG AA passes).

Color values

HEX	#303166
RGB	rgb(48, 49, 102)
HSL	hsl(239, 36%, 29%)
HSV	hsv(239, 53%, 40%)
CMYK	cmyk(52.9%, 52%, 0%, 60%)
CIE-LAB	lab(22.94, 15.85, -31.46)
CIE-LCH	lch(22.94, 35.23, 296.74°)
OKLab	oklab(34.19% 0.0152 -0.0896)
OKLCH	oklch(34.19% 0.091 279.6)
XYZ	xyz(4.7148, 3.7840, 13.0498)
Luminance	0.0378 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303166 #666530

analogous

#304C66 #303166 #4A3066

triadic

#303166 #663031 #316630

tetradic

#303166 #66304C #666530 #30664A

square

#303166 #66304C #666530 #30664A

split-complementary

#303166 #664A30 #4C6630

monochromatic

#0A0A15 #1C1D3C #303166 #444590 #5D5FB3

Accessibility & contrast

On white

11.95

#303166 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#303166 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303166

11.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303166	#FFFFFF	#000000	##FFFFFF
##303166	1.00	11.95	1.76	11.95
#FFFFFF	11.95	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#193968

Deuteranopia (green-blind)

#143565

Tritanopia (blue-blind)

#1B3C46

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #303166;
/* rgb */ color: rgb(48, 49, 102);
/* oklch */ color: oklch(34.2% 0.091 279.6);

Tailwind

colors: {
  custom: {
    50: '#6d6992',
    500: '#303166',
    950: '#000000',
  },
}

SCSS

$custom: #303166;
$custom-light: #6d6992;
$custom-dark: #000000;

JSON

{
  "hex": "#303166",
  "rgb": {
    "r": 48,
    "g": 49,
    "b": 102
  },
  "hsl": {
    "h": 238.889,
    "s": 36,
    "l": 29.412
  },
  "oklch": {
    "l": 0.34194,
    "c": 0.09084,
    "h": 279.6
  },
  "luminance": 0.03784
}

Semantic roles & 50–950 ramp

primary

#303166

secondary

#97965A

accent

#CA5CCC

background

#F6F6F9

surface

#ECEBF1

border

#C7C6CB

text

#07060D

muted

#7A7A7E

Preview Lab

Preview with #303166

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

Preview Lab → · Contrast checker → · Palette generator →