#303EB0#303EB0

#303EB0 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.0% C 0.180 H 271.1°. Best body text is #FFFFFF at 8.60:1 contrast (WCAG AA passes).

Color values

HEX	#303EB0
RGB	rgb(48, 62, 176)
HSL	hsl(233, 57%, 44%)
HSV	hsv(233, 73%, 69%)
CMYK	cmyk(72.7%, 64.8%, 0%, 31%)
CIE-LAB	lab(32.27, 33.92, -62.23)
CIE-LCH	lch(32.27, 70.87, 298.59°)
OKLab	oklab(42.97% 0.0034 -0.1798)
OKLCH	oklch(42.97% 0.18 271.1)
XYZ	xyz(10.7754, 7.2071, 41.8891)
Luminance	0.0721 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.90

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303EB0 #B0A230

analogous

#307EB0 #303EB0 #6230B0

triadic

#303EB0 #B0303E #3EB030

tetradic

#303EB0 #B0307E #B0A230 #30B062

square

#303EB0 #B0307E #B0A230 #30B062

split-complementary

#303EB0 #B06230 #7EB030

monochromatic

#161C50 #232D80 #303EB0 #4E5CCF #7E89DC

Accessibility & contrast

On white

8.60

#303EB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#303EB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303EB0

8.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303EB0	#FFFFFF	#000000	##FFFFFF
##303EB0	1.00	8.60	2.44	8.60
#FFFFFF	8.60	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B4

Deuteranopia (green-blind)

#0046AE

Tritanopia (blue-blind)

#005C71

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #303eb0;
/* rgb */ color: rgb(48, 62, 176);
/* oklch */ color: oklch(43.0% 0.180 271.1);

Tailwind

colors: {
  custom: {
    50: '#7b73c9',
    500: '#303eb0',
    950: '#000000',
  },
}

SCSS

$custom: #303eb0;
$custom-light: #7b73c9;
$custom-dark: #000000;

JSON

{
  "hex": "#303eb0",
  "rgb": {
    "r": 48,
    "g": 62,
    "b": 176
  },
  "hsl": {
    "h": 233.438,
    "s": 57.143,
    "l": 43.922
  },
  "oklch": {
    "l": 0.42973,
    "c": 0.17986,
    "h": 271.1
  },
  "luminance": 0.07208
}

Semantic roles & 50–950 ramp

primary

#303EB0

secondary

#C5BC77

accent

#D047E0

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #303EB0

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

Preview Lab → · Contrast checker → · Palette generator →