#303AAF#303AAF

#303AAF is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.2% C 0.183 H 271.9°. Best body text is #FFFFFF at 8.94:1 contrast (WCAG AA passes).

Color values

HEX	#303AAF
RGB	rgb(48, 58, 175)
HSL	hsl(235, 57%, 44%)
HSV	hsv(235, 73%, 69%)
CMYK	cmyk(72.6%, 66.9%, 0%, 31.4%)
CIE-LAB	lab(31.23, 36.10, -63.35)
CIE-LCH	lch(31.23, 72.91, 299.67°)
OKLab	oklab(42.18% 0.0061 -0.1831)
OKLCH	oklch(42.18% 0.183 271.9)
XYZ	xyz(10.4672, 6.7486, 41.3001)
Luminance	0.0675 (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

#303AAF #AFA530

analogous

#3079AF #303AAF #6530AF

triadic

#303AAF #AF303A #3AAF30

tetradic

#303AAF #AF3079 #AFA530 #30AF65

square

#303AAF #AF3079 #AFA530 #30AF65

split-complementary

#303AAF #AF6530 #79AF30

monochromatic

#161A4F #232A7F #303AAF #4E58CE #7E85DC

Accessibility & contrast

On white

8.94

#303AAF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#303AAF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303AAF

8.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303AAF	#FFFFFF	#000000	##FFFFFF
##303AAF	1.00	8.94	2.35	8.94
#FFFFFF	8.94	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB3

Deuteranopia (green-blind)

#0044AD

Tritanopia (blue-blind)

#00596F

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #303aaf;
/* rgb */ color: rgb(48, 58, 175);
/* oklch */ color: oklch(42.2% 0.183 271.9);

Tailwind

colors: {
  custom: {
    50: '#7b70c8',
    500: '#303aaf',
    950: '#000000',
  },
}

SCSS

$custom: #303aaf;
$custom-light: #7b70c8;
$custom-dark: #000000;

JSON

{
  "hex": "#303aaf",
  "rgb": {
    "r": 48,
    "g": 58,
    "b": 175
  },
  "hsl": {
    "h": 235.276,
    "s": 56.951,
    "l": 43.725
  },
  "oklch": {
    "l": 0.42181,
    "c": 0.18323,
    "h": 271.9
  },
  "luminance": 0.0675
}

Semantic roles & 50–950 ramp

primary

#303AAF

secondary

#C4BE76

accent

#D448E0

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #303AAF

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

Preview Lab → · Contrast checker → · Palette generator →