#303EB9#303EB9

#303EB9 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.8% C 0.192 H 270.8°. Best body text is #FFFFFF at 8.35:1 contrast (WCAG AA passes).

Color values

HEX	#303EB9
RGB	rgb(48, 62, 185)
HSL	hsl(234, 59%, 46%)
HSV	hsv(234, 74%, 73%)
CMYK	cmyk(74.1%, 66.5%, 0%, 27.5%)
CIE-LAB	lab(33.08, 37.13, -66.24)
CIE-LCH	lch(33.08, 75.94, 299.27°)
OKLab	oklab(43.81% 0.0028 -0.1916)
OKLCH	oklch(43.81% 0.192 270.8)
XYZ	xyz(11.6955, 7.5752, 46.7353)
Luminance	0.0758 (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

#303EB9 #B9AB30

analogous

#3082B9 #303EB9 #6730B9

triadic

#303EB9 #B9303E #3EB930

tetradic

#303EB9 #B93082 #B9AB30 #30B967

square

#303EB9 #B93082 #B9AB30 #30B967

split-complementary

#303EB9 #B96730 #82B930

monochromatic

#171D58 #232E88 #303EB9 #5461D3 #848EDF

Accessibility & contrast

On white

8.35

#303EB9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#303EB9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303EB9

8.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303EB9	#FFFFFF	#000000	##FFFFFF
##303EB9	1.00	8.35	2.52	8.35
#FFFFFF	8.35	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BD

Deuteranopia (green-blind)

#0047B7

Tritanopia (blue-blind)

#005F76

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #303eb9;
/* rgb */ color: rgb(48, 62, 185);
/* oklch */ color: oklch(43.8% 0.192 270.8);

Tailwind

colors: {
  custom: {
    50: '#7d73cf',
    500: '#303eb9',
    950: '#000000',
  },
}

SCSS

$custom: #303eb9;
$custom-light: #7d73cf;
$custom-dark: #000000;

JSON

{
  "hex": "#303eb9",
  "rgb": {
    "r": 48,
    "g": 62,
    "b": 185
  },
  "hsl": {
    "h": 233.869,
    "s": 58.798,
    "l": 45.686
  },
  "oklch": {
    "l": 0.43811,
    "c": 0.1916,
    "h": 270.8
  },
  "luminance": 0.07576
}

Semantic roles & 50–950 ramp

primary

#303EB9

secondary

#C9C17C

accent

#D246E2

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #303EB9

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

Preview Lab → · Contrast checker → · Palette generator →