#303AAD#303AAD

#303AAD is a dark, vivid blue. Relative luminance 0.067; OKLCH L 42.0% C 0.181 H 272.0°. Best body text is #FFFFFF at 9.00:1 contrast (WCAG AA passes).

Color values

HEX	#303AAD
RGB	rgb(48, 58, 173)
HSL	hsl(235, 57%, 43%)
HSV	hsv(235, 72%, 68%)
CMYK	cmyk(72.3%, 66.5%, 0%, 32.2%)
CIE-LAB	lab(31.04, 35.39, -62.45)
CIE-LCH	lch(31.04, 71.78, 299.54°)
OKLab	oklab(41.99% 0.0062 -0.1805)
OKLCH	oklch(41.99% 0.181 272)
XYZ	xyz(10.2723, 6.6706, 40.2733)
Luminance	0.0667 (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

#303AAD #ADA330

analogous

#3078AD #303AAD #6430AD

triadic

#303AAD #AD303A #3AAD30

tetradic

#303AAD #AD3078 #ADA330 #30AD64

square

#303AAD #AD3078 #ADA330 #30AD64

split-complementary

#303AAD #AD6430 #78AD30

monochromatic

#151A4D #232A7D #303AAD #4D57CE #7D84DB

Accessibility & contrast

On white

9.00

#303AAD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#303AAD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303AAD

9.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303AAD	#FFFFFF	#000000	##FFFFFF
##303AAD	1.00	9.00	2.33	9.00
#FFFFFF	9.00	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB1

Deuteranopia (green-blind)

#0043AB

Tritanopia (blue-blind)

#00596E

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #303aad;
/* rgb */ color: rgb(48, 58, 173);
/* oklch */ color: oklch(42.0% 0.181 272.0);

Tailwind

colors: {
  custom: {
    50: '#7a70c6',
    500: '#303aad',
    950: '#000000',
  },
}

SCSS

$custom: #303aad;
$custom-light: #7a70c6;
$custom-dark: #000000;

JSON

{
  "hex": "#303aad",
  "rgb": {
    "r": 48,
    "g": 58,
    "b": 173
  },
  "hsl": {
    "h": 235.2,
    "s": 56.561,
    "l": 43.333
  },
  "oklch": {
    "l": 0.41992,
    "c": 0.18062,
    "h": 272
  },
  "luminance": 0.06672
}

Semantic roles & 50–950 ramp

primary

#303AAD

secondary

#C3BD75

accent

#D448E0

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #303AAD

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

Preview Lab → · Contrast checker → · Palette generator →