#303FAD#303FAD

#303FAD is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.9% C 0.175 H 270.9°. Best body text is #FFFFFF at 8.61:1 contrast (WCAG AA passes).

Color values

HEX	#303FAD
RGB	rgb(48, 63, 173)
HSL	hsl(233, 57%, 43%)
HSV	hsv(233, 72%, 68%)
CMYK	cmyk(72.3%, 63.6%, 0%, 32.2%)
CIE-LAB	lab(32.26, 32.19, -60.47)
CIE-LCH	lch(32.26, 68.50, 298.03°)
OKLab	oklab(42.88% 0.0029 -0.1747)
OKLCH	oklch(42.88% 0.175 270.9)
XYZ	xyz(10.5367, 7.1995, 40.3614)
Luminance	0.0720 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.32

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303FAD #AD9E30

analogous

#307DAD #303FAD #5F30AD

triadic

#303FAD #AD303F #3FAD30

tetradic

#303FAD #AD307D #AD9E30 #30AD5F

square

#303FAD #AD307D #AD9E30 #30AD5F

split-complementary

#303FAD #AD5F30 #7DAD30

monochromatic

#151C4D #232E7D #303FAD #4D5CCE #7D88DB

Accessibility & contrast

On white

8.61

#303FAD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#303FAD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303FAD

8.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303FAD	#FFFFFF	#000000	##FFFFFF
##303FAD	1.00	8.61	2.44	8.61
#FFFFFF	8.61	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B1

Deuteranopia (green-blind)

#0046AB

Tritanopia (blue-blind)

#005B70

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #303fad;
/* rgb */ color: rgb(48, 63, 173);
/* oklch */ color: oklch(42.9% 0.175 270.9);

Tailwind

colors: {
  custom: {
    50: '#7a74c6',
    500: '#303fad',
    950: '#000000',
  },
}

SCSS

$custom: #303fad;
$custom-light: #7a74c6;
$custom-dark: #000000;

JSON

{
  "hex": "#303fad",
  "rgb": {
    "r": 48,
    "g": 63,
    "b": 173
  },
  "hsl": {
    "h": 232.8,
    "s": 56.561,
    "l": 43.333
  },
  "oklch": {
    "l": 0.42879,
    "c": 0.17468,
    "h": 270.9
  },
  "luminance": 0.07201
}

Semantic roles & 50–950 ramp

primary

#303FAD

secondary

#C3BA75

accent

#CE48E0

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #303FAD

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

Preview Lab → · Contrast checker → · Palette generator →