#304FB4#304FB4

#304FB4 is a mid, vivid blue. Relative luminance 0.095; OKLCH L 46.6% C 0.164 H 266.9°. Best body text is #FFFFFF at 7.23:1 contrast (WCAG AA passes).

Color values

HEX	#304FB4
RGB	rgb(48, 79, 180)
HSL	hsl(226, 58%, 45%)
HSV	hsv(226, 73%, 71%)
CMYK	cmyk(73.3%, 56.1%, 0%, 29.4%)
CIE-LAB	lab(36.96, 24.31, -56.96)
CIE-LCH	lch(36.96, 61.93, 293.11°)
OKLab	oklab(46.55% -0.009 -0.1642)
OKLCH	oklch(46.55% 0.164 266.9)
XYZ	xyz(12.2503, 9.5143, 44.3620)
Luminance	0.0952 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304FB4 #B49530

analogous

#3091B4 #304FB4 #5330B4

triadic

#304FB4 #B4304F #4FB430

tetradic

#304FB4 #B43091 #B49530 #30B453

square

#304FB4 #B43091 #B49530 #30B453

split-complementary

#304FB4 #B45330 #91B430

monochromatic

#162553 #233A84 #304FB4 #516FD1 #8197DD

Accessibility & contrast

On white

7.23

#304FB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#304FB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304FB4

7.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304FB4	#FFFFFF	#000000	##FFFFFF
##304FB4	1.00	7.23	2.90	7.23
#FFFFFF	7.23	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DB7

Deuteranopia (green-blind)

#0051B2

Tritanopia (blue-blind)

#006879

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #304fb4;
/* rgb */ color: rgb(48, 79, 180);
/* oklch */ color: oklch(46.6% 0.164 266.9);

Tailwind

colors: {
  custom: {
    50: '#7a7fcb',
    500: '#304fb4',
    950: '#000000',
  },
}

SCSS

$custom: #304fb4;
$custom-light: #7a7fcb;
$custom-dark: #000000;

JSON

{
  "hex": "#304fb4",
  "rgb": {
    "r": 48,
    "g": 79,
    "b": 180
  },
  "hsl": {
    "h": 225.909,
    "s": 57.895,
    "l": 44.706
  },
  "oklch": {
    "l": 0.46553,
    "c": 0.16443,
    "h": 266.9
  },
  "luminance": 0.09516
}

Semantic roles & 50–950 ramp

primary

#304FB4

secondary

#C6B479

accent

#BD47E1

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #304FB4

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

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