#304FA8#304FA8

#304FA8 is a mid, vivid blue. Relative luminance 0.090; OKLCH L 45.6% C 0.148 H 266.2°. Best body text is #FFFFFF at 7.47:1 contrast (WCAG AA passes).

Color values

HEX	#304FA8
RGB	rgb(48, 79, 168)
HSL	hsl(225, 56%, 42%)
HSV	hsv(225, 71%, 66%)
CMYK	cmyk(71.4%, 53%, 0%, 34.1%)
CIE-LAB	lab(36.07, 19.80, -51.28)
CIE-LCH	lch(36.07, 54.97, 291.11°)
OKLab	oklab(45.61% -0.0099 -0.1474)
OKLCH	oklch(45.61% 0.148 266.2)
XYZ	xyz(11.0803, 9.0464, 38.2004)
Luminance	0.0905 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304FA8 #A88930

analogous

#308BA8 #304FA8 #4D30A8

triadic

#304FA8 #A8304F #4FA830

tetradic

#304FA8 #A8308B #A88930 #30A84D

square

#304FA8 #A8308B #A88930 #30A84D

split-complementary

#304FA8 #A84D30 #8BA830

monochromatic

#152249 #223978 #304FA8 #4A6BCB #7A92D9

Accessibility & contrast

On white

7.47

#304FA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#304FA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304FA8

7.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304FA8	#FFFFFF	#000000	##FFFFFF
##304FA8	1.00	7.47	2.81	7.47
#FFFFFF	7.47	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#135BAB

Deuteranopia (green-blind)

#0050A6

Tritanopia (blue-blind)

#006474

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #304fa8;
/* rgb */ color: rgb(48, 79, 168);
/* oklch */ color: oklch(45.6% 0.148 266.2);

Tailwind

colors: {
  custom: {
    50: '#787fc2',
    500: '#304fa8',
    950: '#000000',
  },
}

SCSS

$custom: #304fa8;
$custom-light: #787fc2;
$custom-dark: #000000;

JSON

{
  "hex": "#304fa8",
  "rgb": {
    "r": 48,
    "g": 79,
    "b": 168
  },
  "hsl": {
    "h": 224.5,
    "s": 55.556,
    "l": 42.353
  },
  "oklch": {
    "l": 0.45607,
    "c": 0.14778,
    "h": 266.2
  },
  "luminance": 0.09047
}

Semantic roles & 50–950 ramp

primary

#304FA8

secondary

#C1AD73

accent

#B849DF

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0A12

muted

#7C7C81

Preview Lab

Preview with #304FA8

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

Preview Lab → · Contrast checker → · Palette generator →