#304EA6#304EA6

#304EA6 is a mid, vivid blue. Relative luminance 0.088; OKLCH L 45.2% C 0.146 H 266.4°. Best body text is #FFFFFF at 7.59:1 contrast (WCAG AA passes).

Color values

HEX	#304EA6
RGB	rgb(48, 78, 166)
HSL	hsl(225, 55%, 42%)
HSV	hsv(225, 71%, 65%)
CMYK	cmyk(71.1%, 53%, 0%, 34.9%)
CIE-LAB	lab(35.65, 19.71, -50.76)
CIE-LCH	lch(35.65, 54.45, 291.22°)
OKLab	oklab(45.24% -0.0092 -0.1459)
OKLCH	oklch(45.24% 0.146 266.4)
XYZ	xyz(10.8238, 8.8292, 37.2028)
Luminance	0.0883 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304EA6 #A68830

analogous

#3089A6 #304EA6 #4D30A6

triadic

#304EA6 #A6304E #4EA630

tetradic

#304EA6 #A63089 #A68830 #30A64D

square

#304EA6 #A63089 #A68830 #30A64D

split-complementary

#304EA6 #A64D30 #89A630

monochromatic

#152147 #223877 #304EA6 #496ACA #7891D8

Accessibility & contrast

On white

7.59

#304EA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.77

#304EA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304EA6

7.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304EA6	#FFFFFF	#000000	##FFFFFF
##304EA6	1.00	7.59	2.77	7.59
#FFFFFF	7.59	1.00	21.00	1.00
#000000	2.77	21.00	1.00	21.00
##FFFFFF	7.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#135AA9

Deuteranopia (green-blind)

#004FA4

Tritanopia (blue-blind)

#006372

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #304ea6;
/* rgb */ color: rgb(48, 78, 166);
/* oklch */ color: oklch(45.2% 0.146 266.4);

Tailwind

colors: {
  custom: {
    50: '#777fc1',
    500: '#304ea6',
    950: '#000000',
  },
}

SCSS

$custom: #304ea6;
$custom-light: #777fc1;
$custom-dark: #000000;

JSON

{
  "hex": "#304ea6",
  "rgb": {
    "r": 48,
    "g": 78,
    "b": 166
  },
  "hsl": {
    "h": 224.746,
    "s": 55.14,
    "l": 41.961
  },
  "oklch": {
    "l": 0.45243,
    "c": 0.14624,
    "h": 266.4
  },
  "luminance": 0.0883
}

Semantic roles & 50–950 ramp

primary

#304EA6

secondary

#C0AC71

accent

#B949DE

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#0A0A12

muted

#7C7C81

Preview Lab

Preview with #304EA6

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

Preview Lab → · Contrast checker → · Palette generator →