#304AB0#304AB0

#304AB0 is a mid, vivid blue. Relative luminance 0.087; OKLCH L 45.2% C 0.165 H 268.2°. Best body text is #FFFFFF at 7.69:1 contrast (WCAG AA passes).

Color values

HEX	#304AB0
RGB	rgb(48, 74, 176)
HSL	hsl(228, 57%, 44%)
HSV	hsv(228, 73%, 69%)
CMYK	cmyk(72.7%, 58%, 0%, 31%)
CIE-LAB	lab(35.32, 26.10, -57.26)
CIE-LCH	lch(35.32, 62.93, 294.51°)
OKLab	oklab(45.23% -0.0053 -0.1651)
OKLCH	oklch(45.23% 0.165 268.2)
XYZ	xyz(11.5015, 8.6593, 42.1311)
Luminance	0.0866 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304AB0 #B09630

analogous

#308AB0 #304AB0 #5630B0

triadic

#304AB0 #B0304A #4AB030

tetradic

#304AB0 #B0308A #B09630 #30B056

square

#304AB0 #B0308A #B09630 #30B056

split-complementary

#304AB0 #B05630 #8AB030

monochromatic

#162250 #233680 #304AB0 #4E68CF #7E91DC

Accessibility & contrast

On white

7.69

#304AB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.73

#304AB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304AB0

7.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304AB0	#FFFFFF	#000000	##FFFFFF
##304AB0	1.00	7.69	2.73	7.69
#FFFFFF	7.69	1.00	21.00	1.00
#000000	2.73	21.00	1.00	21.00
##FFFFFF	7.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059B3

Deuteranopia (green-blind)

#004DAE

Tritanopia (blue-blind)

#006375

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #304ab0;
/* rgb */ color: rgb(48, 74, 176);
/* oklch */ color: oklch(45.2% 0.165 268.2);

Tailwind

colors: {
  custom: {
    50: '#7a7cc8',
    500: '#304ab0',
    950: '#000000',
  },
}

SCSS

$custom: #304ab0;
$custom-light: #7a7cc8;
$custom-dark: #000000;

JSON

{
  "hex": "#304ab0",
  "rgb": {
    "r": 48,
    "g": 74,
    "b": 176
  },
  "hsl": {
    "h": 227.813,
    "s": 57.143,
    "l": 43.922
  },
  "oklch": {
    "l": 0.45229,
    "c": 0.16519,
    "h": 268.2
  },
  "luminance": 0.08661
}

Semantic roles & 50–950 ramp

primary

#304AB0

secondary

#C5B577

accent

#C147E0

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #304AB0

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

Preview Lab → · Contrast checker → · Palette generator →