#304AB6#304AB6

#304AB6 is a mid, vivid blue. Relative luminance 0.089; OKLCH L 45.7% C 0.173 H 268.3°. Best body text is #FFFFFF at 7.55:1 contrast (WCAG AA passes).

Color values

HEX	#304AB6
RGB	rgb(48, 74, 182)
HSL	hsl(228, 58%, 45%)
HSV	hsv(228, 74%, 71%)
CMYK	cmyk(73.6%, 59.3%, 0%, 28.6%)
CIE-LAB	lab(35.80, 28.33, -60.03)
CIE-LCH	lch(35.80, 66.38, 295.26°)
OKLab	oklab(45.73% -0.0051 -0.1733)
OKLCH	oklch(45.73% 0.173 268.3)
XYZ	xyz(12.1083, 8.9021, 45.3270)
Luminance	0.0890 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304AB6 #B69C30

analogous

#308DB6 #304AB6 #5930B6

triadic

#304AB6 #B6304A #4AB630

tetradic

#304AB6 #B6308D #B69C30 #30B659

square

#304AB6 #B6308D #B69C30 #30B659

split-complementary

#304AB6 #B65930 #8DB630

monochromatic

#162355 #233686 #304AB6 #526BD1 #8294DE

Accessibility & contrast

On white

7.55

#304AB6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#304AB6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304AB6

7.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304AB6	#FFFFFF	#000000	##FFFFFF
##304AB6	1.00	7.55	2.78	7.55
#FFFFFF	7.55	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BBA

Deuteranopia (green-blind)

#004EB4

Tritanopia (blue-blind)

#006579

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #304ab6;
/* rgb */ color: rgb(48, 74, 182);
/* oklch */ color: oklch(45.7% 0.173 268.3);

Tailwind

colors: {
  custom: {
    50: '#7b7ccd',
    500: '#304ab6',
    950: '#000000',
  },
}

SCSS

$custom: #304ab6;
$custom-light: #7b7ccd;
$custom-dark: #000000;

JSON

{
  "hex": "#304ab6",
  "rgb": {
    "r": 48,
    "g": 74,
    "b": 182
  },
  "hsl": {
    "h": 228.358,
    "s": 58.261,
    "l": 45.098
  },
  "oklch": {
    "l": 0.45732,
    "c": 0.17335,
    "h": 268.3
  },
  "luminance": 0.08903
}

Semantic roles & 50–950 ramp

primary

#304AB6

secondary

#C7B87B

accent

#C346E1

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #304AB6

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

Preview Lab → · Contrast checker → · Palette generator →