#303EA4#303EA4

#303EA4 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 41.9% C 0.164 H 271.4°. Best body text is #FFFFFF at 8.93:1 contrast (WCAG AA passes).

Color values

HEX	#303EA4
RGB	rgb(48, 62, 164)
HSL	hsl(233, 55%, 42%)
HSV	hsv(233, 71%, 64%)
CMYK	cmyk(70.7%, 62.2%, 0%, 35.7%)
CIE-LAB	lab(31.24, 29.56, -56.74)
CIE-LCH	lch(31.24, 63.98, 297.52°)
OKLab	oklab(41.89% 0.0039 -0.1637)
OKLCH	oklch(41.89% 0.164 271.4)
XYZ	xyz(9.6401, 6.7530, 35.9102)
Luminance	0.0675 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303EA4 #A49630

analogous

#3078A4 #303EA4 #5C30A4

triadic

#303EA4 #A4303E #3EA430

tetradic

#303EA4 #A43078 #A49630 #30A45C

square

#303EA4 #A43078 #A49630 #30A45C

split-complementary

#303EA4 #A45C30 #78A430

monochromatic

#141A45 #222C75 #303EA4 #4857C9 #7783D7

Accessibility & contrast

On white

8.93

#303EA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#303EA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303EA4

8.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303EA4	#FFFFFF	#000000	##FFFFFF
##303EA4	1.00	8.93	2.35	8.93
#FFFFFF	8.93	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA7

Deuteranopia (green-blind)

#0044A2

Tritanopia (blue-blind)

#00586B

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #303ea4;
/* rgb */ color: rgb(48, 62, 164);
/* oklch */ color: oklch(41.9% 0.164 271.4);

Tailwind

colors: {
  custom: {
    50: '#7873c0',
    500: '#303ea4',
    950: '#000000',
  },
}

SCSS

$custom: #303ea4;
$custom-light: #7873c0;
$custom-dark: #000000;

JSON

{
  "hex": "#303ea4",
  "rgb": {
    "r": 48,
    "g": 62,
    "b": 164
  },
  "hsl": {
    "h": 232.759,
    "s": 54.717,
    "l": 41.569
  },
  "oklch": {
    "l": 0.4189,
    "c": 0.16378,
    "h": 271.4
  },
  "luminance": 0.06754
}

Semantic roles & 50–950 ramp

primary

#303EA4

secondary

#BFB670

accent

#CC4ADE

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #303EA4

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

Preview Lab → · Contrast checker → · Palette generator →