#304BB0#304BB0

#304BB0 is a mid, vivid blue. Relative luminance 0.088; OKLCH L 45.4% C 0.164 H 267.9°. Best body text is #FFFFFF at 7.61:1 contrast (WCAG AA passes).

Color values

HEX	#304BB0
RGB	rgb(48, 75, 176)
HSL	hsl(227, 57%, 44%)
HSV	hsv(227, 73%, 69%)
CMYK	cmyk(72.7%, 57.4%, 0%, 31%)
CIE-LAB	lab(35.58, 25.45, -56.83)
CIE-LCH	lch(35.58, 62.26, 294.12°)
OKLab	oklab(45.43% -0.0061 -0.1638)
OKLCH	oklch(45.43% 0.164 267.9)
XYZ	xyz(11.5688, 8.7939, 42.1536)
Luminance	0.0880 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304BB0 #B09530

analogous

#308BB0 #304BB0 #5530B0

triadic

#304BB0 #B0304B #4BB030

tetradic

#304BB0 #B0308B #B09530 #30B055

square

#304BB0 #B0308B #B09530 #30B055

split-complementary

#304BB0 #B05530 #8BB030

monochromatic

#162250 #233780 #304BB0 #4E69CF #7E92DC

Accessibility & contrast

On white

7.61

#304BB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.76

#304BB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304BB0

7.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304BB0	#FFFFFF	#000000	##FFFFFF
##304BB0	1.00	7.61	2.76	7.61
#FFFFFF	7.61	1.00	21.00	1.00
#000000	2.76	21.00	1.00	21.00
##FFFFFF	7.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005AB3

Deuteranopia (green-blind)

#004EAE

Tritanopia (blue-blind)

#006476

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #304bb0;
/* rgb */ color: rgb(48, 75, 176);
/* oklch */ color: oklch(45.4% 0.164 267.9);

Tailwind

colors: {
  custom: {
    50: '#7a7cc8',
    500: '#304bb0',
    950: '#000000',
  },
}

SCSS

$custom: #304bb0;
$custom-light: #7a7cc8;
$custom-dark: #000000;

JSON

{
  "hex": "#304bb0",
  "rgb": {
    "r": 48,
    "g": 75,
    "b": 176
  },
  "hsl": {
    "h": 227.344,
    "s": 57.143,
    "l": 43.922
  },
  "oklch": {
    "l": 0.45427,
    "c": 0.16394,
    "h": 267.9
  },
  "luminance": 0.08795
}

Semantic roles & 50–950 ramp

primary

#304BB0

secondary

#C5B477

accent

#C047E0

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #304BB0

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

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