#303EB8#303EB8

#303EB8 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.7% C 0.190 H 270.9°. Best body text is #FFFFFF at 8.38:1 contrast (WCAG AA passes).

Color values

HEX	#303EB8
RGB	rgb(48, 62, 184)
HSL	hsl(234, 59%, 45%)
HSV	hsv(234, 74%, 72%)
CMYK	cmyk(73.9%, 66.3%, 0%, 27.8%)
CIE-LAB	lab(32.99, 36.78, -65.80)
CIE-LCH	lch(32.99, 75.38, 299.20°)
OKLab	oklab(43.72% 0.0028 -0.1903)
OKLCH	oklch(43.72% 0.19 270.9)
XYZ	xyz(11.5903, 7.5331, 46.1813)
Luminance	0.0753 (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

#303EB8 #B8AA30

analogous

#3082B8 #303EB8 #6630B8

triadic

#303EB8 #B8303E #3EB830

tetradic

#303EB8 #B83082 #B8AA30 #30B866

square

#303EB8 #B83082 #B8AA30 #30B866

split-complementary

#303EB8 #B86630 #82B830

monochromatic

#171D57 #232E87 #303EB8 #5360D2 #848DDF

Accessibility & contrast

On white

8.38

#303EB8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#303EB8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303EB8

8.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303EB8	#FFFFFF	#000000	##FFFFFF
##303EB8	1.00	8.38	2.51	8.38
#FFFFFF	8.38	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BC

Deuteranopia (green-blind)

#0047B6

Tritanopia (blue-blind)

#005F75

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #303eb8;
/* rgb */ color: rgb(48, 62, 184);
/* oklch */ color: oklch(43.7% 0.190 270.9);

Tailwind

colors: {
  custom: {
    50: '#7d73ce',
    500: '#303eb8',
    950: '#000000',
  },
}

SCSS

$custom: #303eb8;
$custom-light: #7d73ce;
$custom-dark: #000000;

JSON

{
  "hex": "#303eb8",
  "rgb": {
    "r": 48,
    "g": 62,
    "b": 184
  },
  "hsl": {
    "h": 233.824,
    "s": 58.621,
    "l": 45.49
  },
  "oklch": {
    "l": 0.43717,
    "c": 0.1903,
    "h": 270.9
  },
  "luminance": 0.07534
}

Semantic roles & 50–950 ramp

primary

#303EB8

secondary

#C8C07C

accent

#D246E2

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #303EB8

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

Preview Lab → · Contrast checker → · Palette generator →