#303AA3#303AA3

#303AA3 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 41.1% C 0.167 H 272.4°. Best body text is #FFFFFF at 9.29:1 contrast (WCAG AA passes).

Color values

HEX	#303AA3
RGB	rgb(48, 58, 163)
HSL	hsl(235, 55%, 41%)
HSV	hsv(235, 71%, 64%)
CMYK	cmyk(70.6%, 64.4%, 0%, 36.1%)
CIE-LAB	lab(30.15, 31.81, -57.91)
CIE-LCH	lch(30.15, 66.07, 298.78°)
OKLab	oklab(41.06% 0.007 -0.1672)
OKLCH	oklch(41.06% 0.167 272.4)
XYZ	xyz(9.3406, 6.2979, 35.3666)
Luminance	0.0630 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303AA3 #A39930

analogous

#3074A3 #303AA3 #6030A3

triadic

#303AA3 #A3303A #3AA330

tetradic

#303AA3 #A33074 #A39930 #30A360

square

#303AA3 #A33074 #A39930 #30A360

split-complementary

#303AA3 #A36030 #74A330

monochromatic

#141844 #222974 #303AA3 #4753C9 #777FD7

Accessibility & contrast

On white

9.29

#303AA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#303AA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303AA3

9.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303AA3	#FFFFFF	#000000	##FFFFFF
##303AA3	1.00	9.29	2.26	9.29
#FFFFFF	9.29	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA6

Deuteranopia (green-blind)

#0042A1

Tritanopia (blue-blind)

#005569

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #303aa3;
/* rgb */ color: rgb(48, 58, 163);
/* oklch */ color: oklch(41.1% 0.167 272.4);

Tailwind

colors: {
  custom: {
    50: '#7870bf',
    500: '#303aa3',
    950: '#000000',
  },
}

SCSS

$custom: #303aa3;
$custom-light: #7870bf;
$custom-dark: #000000;

JSON

{
  "hex": "#303aa3",
  "rgb": {
    "r": 48,
    "g": 58,
    "b": 163
  },
  "hsl": {
    "h": 234.783,
    "s": 54.502,
    "l": 41.373
  },
  "oklch": {
    "l": 0.41064,
    "c": 0.16734,
    "h": 272.4
  },
  "luminance": 0.06299
}

Semantic roles & 50–950 ramp

primary

#303AA3

secondary

#BFB870

accent

#D14ADE

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #303AA3

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

Preview Lab → · Contrast checker → · Palette generator →