#304EA4#304EA4

#304EA4 is a mid, vivid blue. Relative luminance 0.088; OKLCH L 45.1% C 0.143 H 266.2°. Best body text is #FFFFFF at 7.63:1 contrast (WCAG AA passes).

Color values

HEX	#304EA4
RGB	rgb(48, 78, 164)
HSL	hsl(224, 55%, 42%)
HSV	hsv(224, 71%, 64%)
CMYK	cmyk(70.7%, 52.4%, 0%, 35.7%)
CIE-LAB	lab(35.51, 18.96, -49.80)
CIE-LCH	lch(35.51, 53.28, 290.84°)
OKLab	oklab(45.09% -0.0094 -0.1431)
OKLCH	oklch(45.09% 0.143 266.2)
XYZ	xyz(10.6418, 8.7564, 36.2441)
Luminance	0.0876 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304EA4 #A48630

analogous

#3088A4 #304EA4 #4C30A4

triadic

#304EA4 #A4304E #4EA430

tetradic

#304EA4 #A43088 #A48630 #30A44C

square

#304EA4 #A43088 #A48630 #30A44C

split-complementary

#304EA4 #A44C30 #88A430

monochromatic

#142145 #223775 #304EA4 #4869C9 #7790D7

Accessibility & contrast

On white

7.63

#304EA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#304EA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304EA4

7.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304EA4	#FFFFFF	#000000	##FFFFFF
##304EA4	1.00	7.63	2.75	7.63
#FFFFFF	7.63	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1759A7

Deuteranopia (green-blind)

#004EA2

Tritanopia (blue-blind)

#006271

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #304ea4;
/* rgb */ color: rgb(48, 78, 164);
/* oklch */ color: oklch(45.1% 0.143 266.2);

Tailwind

colors: {
  custom: {
    50: '#777fc0',
    500: '#304ea4',
    950: '#000000',
  },
}

SCSS

$custom: #304ea4;
$custom-light: #777fc0;
$custom-dark: #000000;

JSON

{
  "hex": "#304ea4",
  "rgb": {
    "r": 48,
    "g": 78,
    "b": 164
  },
  "hsl": {
    "h": 224.483,
    "s": 54.717,
    "l": 41.569
  },
  "oklch": {
    "l": 0.4509,
    "c": 0.14342,
    "h": 266.2
  },
  "luminance": 0.08757
}

Semantic roles & 50–950 ramp

primary

#304EA4

secondary

#BFAB70

accent

#B84ADE

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#0A0A12

muted

#7C7C81

Preview Lab

Preview with #304EA4

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

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