#303EA6#303EA6

#303EA6 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.1% C 0.166 H 271.3°. Best body text is #FFFFFF at 8.88:1 contrast (WCAG AA passes).

Color values

HEX	#303EA6
RGB	rgb(48, 62, 166)
HSL	hsl(233, 55%, 42%)
HSV	hsv(233, 71%, 65%)
CMYK	cmyk(71.1%, 62.7%, 0%, 34.9%)
CIE-LAB	lab(31.41, 30.29, -57.66)
CIE-LCH	lch(31.41, 65.14, 297.72°)
OKLab	oklab(42.07% 0.0038 -0.1664)
OKLCH	oklch(42.07% 0.166 271.3)
XYZ	xyz(9.8222, 6.8258, 36.8689)
Luminance	0.0683 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303EA6 #A69830

analogous

#3079A6 #303EA6 #5D30A6

triadic

#303EA6 #A6303E #3EA630

tetradic

#303EA6 #A63079 #A69830 #30A65D

square

#303EA6 #A63079 #A69830 #30A65D

split-complementary

#303EA6 #A65D30 #79A630

monochromatic

#151B47 #222C77 #303EA6 #4958CA #7884D8

Accessibility & contrast

On white

8.88

#303EA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#303EA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303EA6

8.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303EA6	#FFFFFF	#000000	##FFFFFF
##303EA6	1.00	8.88	2.37	8.88
#FFFFFF	8.88	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA9

Deuteranopia (green-blind)

#0045A4

Tritanopia (blue-blind)

#00596C

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #303ea6;
/* rgb */ color: rgb(48, 62, 166);
/* oklch */ color: oklch(42.1% 0.166 271.3);

Tailwind

colors: {
  custom: {
    50: '#7973c1',
    500: '#303ea6',
    950: '#000000',
  },
}

SCSS

$custom: #303ea6;
$custom-light: #7973c1;
$custom-dark: #000000;

JSON

{
  "hex": "#303ea6",
  "rgb": {
    "r": 48,
    "g": 62,
    "b": 166
  },
  "hsl": {
    "h": 232.881,
    "s": 55.14,
    "l": 41.961
  },
  "oklch": {
    "l": 0.42068,
    "c": 0.16649,
    "h": 271.3
  },
  "luminance": 0.06827
}

Semantic roles & 50–950 ramp

primary

#303EA6

secondary

#C0B771

accent

#CD49DE

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #303EA6

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

Preview Lab → · Contrast checker → · Palette generator →