#303FAE#303FAE

#303FAE is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.0% C 0.176 H 270.9°. Best body text is #FFFFFF at 8.58:1 contrast (WCAG AA passes).

Color values

HEX	#303FAE
RGB	rgb(48, 63, 174)
HSL	hsl(233, 57%, 44%)
HSV	hsv(233, 72%, 68%)
CMYK	cmyk(72.4%, 63.8%, 0%, 31.8%)
CIE-LAB	lab(32.34, 32.55, -60.92)
CIE-LCH	lch(32.34, 69.07, 298.12°)
OKLab	oklab(42.97% 0.0028 -0.176)
OKLCH	oklch(42.97% 0.176 270.9)
XYZ	xyz(10.6338, 7.2383, 40.8729)
Luminance	0.0724 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.21

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303FAE #AE9F30

analogous

#307EAE #303FAE #6030AE

triadic

#303FAE #AE303F #3FAE30

tetradic

#303FAE #AE307E #AE9F30 #30AE60

square

#303FAE #AE307E #AE9F30 #30AE60

split-complementary

#303FAE #AE6030 #7EAE30

monochromatic

#161C4E #232E7E #303FAE #4D5DCE #7D88DB

Accessibility & contrast

On white

8.58

#303FAE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#303FAE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303FAE

8.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303FAE	#FFFFFF	#000000	##FFFFFF
##303FAE	1.00	8.58	2.45	8.58
#FFFFFF	8.58	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B2

Deuteranopia (green-blind)

#0046AC

Tritanopia (blue-blind)

#005C70

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #303fae;
/* rgb */ color: rgb(48, 63, 174);
/* oklch */ color: oklch(43.0% 0.176 270.9);

Tailwind

colors: {
  custom: {
    50: '#7a74c7',
    500: '#303fae',
    950: '#000000',
  },
}

SCSS

$custom: #303fae;
$custom-light: #7a74c7;
$custom-dark: #000000;

JSON

{
  "hex": "#303fae",
  "rgb": {
    "r": 48,
    "g": 63,
    "b": 174
  },
  "hsl": {
    "h": 232.857,
    "s": 56.757,
    "l": 43.529
  },
  "oklch": {
    "l": 0.4297,
    "c": 0.17602,
    "h": 270.9
  },
  "luminance": 0.07239
}

Semantic roles & 50–950 ramp

primary

#303FAE

secondary

#C4BB76

accent

#CE48E0

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #303FAE

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

Preview Lab → · Contrast checker → · Palette generator →