#303CAC#303CAC

#303CAC is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.2% C 0.177 H 271.6°. Best body text is #FFFFFF at 8.87:1 contrast (WCAG AA passes).

Color values

HEX	#303CAC
RGB	rgb(48, 60, 172)
HSL	hsl(234, 56%, 43%)
HSV	hsv(234, 72%, 67%)
CMYK	cmyk(72.1%, 65.1%, 0%, 32.5%)
CIE-LAB	lab(31.43, 33.76, -61.22)
CIE-LCH	lch(31.43, 69.91, 298.87°)
OKLab	oklab(42.25% 0.005 -0.1769)
OKLCH	oklch(42.25% 0.177 271.6)
XYZ	xyz(10.2787, 6.8376, 39.7998)
Luminance	0.0684 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.17

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303CAC #ACA030

analogous

#307AAC #303CAC #6230AC

triadic

#303CAC #AC303C #3CAC30

tetradic

#303CAC #AC307A #ACA030 #30AC62

square

#303CAC #AC307A #ACA030 #30AC62

split-complementary

#303CAC #AC6230 #7AAC30

monochromatic

#151B4C #232B7C #303CAC #4C59CD #7C85DA

Accessibility & contrast

On white

8.87

#303CAC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#303CAC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303CAC

8.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303CAC	#FFFFFF	#000000	##FFFFFF
##303CAC	1.00	8.87	2.37	8.87
#FFFFFF	8.87	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B0

Deuteranopia (green-blind)

#0044AA

Tritanopia (blue-blind)

#00596E

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #303cac;
/* rgb */ color: rgb(48, 60, 172);
/* oklch */ color: oklch(42.2% 0.177 271.6);

Tailwind

colors: {
  custom: {
    50: '#7a72c6',
    500: '#303cac',
    950: '#000000',
  },
}

SCSS

$custom: #303cac;
$custom-light: #7a72c6;
$custom-dark: #000000;

JSON

{
  "hex": "#303cac",
  "rgb": {
    "r": 48,
    "g": 60,
    "b": 172
  },
  "hsl": {
    "h": 234.194,
    "s": 56.364,
    "l": 43.137
  },
  "oklch": {
    "l": 0.42249,
    "c": 0.17695,
    "h": 271.6
  },
  "luminance": 0.06839
}

Semantic roles & 50–950 ramp

primary

#303CAC

secondary

#C3BB75

accent

#D148E0

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #303CAC

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

Preview Lab → · Contrast checker → · Palette generator →