#303DB6#303DB6

#303DB6 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.4% C 0.189 H 271.1°. Best body text is #FFFFFF at 8.51:1 contrast (WCAG AA passes).

Color values

HEX	#303DB6
RGB	rgb(48, 61, 182)
HSL	hsl(234, 58%, 45%)
HSV	hsv(234, 74%, 71%)
CMYK	cmyk(73.6%, 66.5%, 0%, 28.6%)
CIE-LAB	lab(32.57, 36.69, -65.30)
CIE-LCH	lch(32.57, 74.91, 299.33°)
OKLab	oklab(43.36% 0.0036 -0.1888)
OKLCH	oklch(43.36% 0.189 271.1)
XYZ	xyz(11.3283, 7.3421, 45.0670)
Luminance	0.0734 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303DB6 #B6A930

analogous

#3080B6 #303DB6 #6630B6

triadic

#303DB6 #B6303D #3DB630

tetradic

#303DB6 #B63080 #B6A930 #30B666

square

#303DB6 #B63080 #B6A930 #30B666

split-complementary

#303DB6 #B66630 #80B630

monochromatic

#161D55 #232D86 #303DB6 #525ED1 #828BDE

Accessibility & contrast

On white

8.51

#303DB6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#303DB6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303DB6

8.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303DB6	#FFFFFF	#000000	##FFFFFF
##303DB6	1.00	8.51	2.47	8.51
#FFFFFF	8.51	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053BA

Deuteranopia (green-blind)

#0046B4

Tritanopia (blue-blind)

#005D74

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #303db6;
/* rgb */ color: rgb(48, 61, 182);
/* oklch */ color: oklch(43.4% 0.189 271.1);

Tailwind

colors: {
  custom: {
    50: '#7c73cd',
    500: '#303db6',
    950: '#000000',
  },
}

SCSS

$custom: #303db6;
$custom-light: #7c73cd;
$custom-dark: #000000;

JSON

{
  "hex": "#303db6",
  "rgb": {
    "r": 48,
    "g": 61,
    "b": 182
  },
  "hsl": {
    "h": 234.179,
    "s": 58.261,
    "l": 45.098
  },
  "oklch": {
    "l": 0.43357,
    "c": 0.18886,
    "h": 271.1
  },
  "luminance": 0.07343
}

Semantic roles & 50–950 ramp

primary

#303DB6

secondary

#C7C07B

accent

#D246E1

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #303DB6

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

Preview Lab → · Contrast checker → · Palette generator →