#304AAB#304AAB

#304AAB is a dark, vivid blue. Relative luminance 0.085; OKLCH L 44.8% C 0.158 H 268.0°. Best body text is #FFFFFF at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#304AAB
RGB	rgb(48, 74, 171)
HSL	hsl(227, 56%, 43%)
HSV	hsv(227, 72%, 67%)
CMYK	cmyk(71.9%, 56.7%, 0%, 32.9%)
CIE-LAB	lab(34.93, 24.24, -54.91)
CIE-LCH	lch(34.93, 60.02, 293.82°)
OKLab	oklab(44.82% -0.0055 -0.1582)
OKLCH	oklch(44.82% 0.158 268)
XYZ	xyz(11.0158, 8.4651, 39.5736)
Luminance	0.0847 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304AAB #AB9130

analogous

#3087AB #304AAB #5330AB

triadic

#304AAB #AB304A #4AAB30

tetradic

#304AAB #AB3087 #AB9130 #30AB53

square

#304AAB #AB3087 #AB9130 #30AB53

split-complementary

#304AAB #AB5330 #87AB30

monochromatic

#15214B #23357B #304AAB #4C67CD #7B8FDA

Accessibility & contrast

On white

7.80

#304AAB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#304AAB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304AAB

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304AAB	#FFFFFF	#000000	##FFFFFF
##304AAB	1.00	7.80	2.69	7.80
#FFFFFF	7.80	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058AE

Deuteranopia (green-blind)

#004DA9

Tritanopia (blue-blind)

#006273

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #304aab;
/* rgb */ color: rgb(48, 74, 171);
/* oklch */ color: oklch(44.8% 0.158 268.0);

Tailwind

colors: {
  custom: {
    50: '#797cc5',
    500: '#304aab',
    950: '#000000',
  },
}

SCSS

$custom: #304aab;
$custom-light: #797cc5;
$custom-dark: #000000;

JSON

{
  "hex": "#304aab",
  "rgb": {
    "r": 48,
    "g": 74,
    "b": 171
  },
  "hsl": {
    "h": 227.317,
    "s": 56.164,
    "l": 42.941
  },
  "oklch": {
    "l": 0.44818,
    "c": 0.15831,
    "h": 268
  },
  "luminance": 0.08466
}

Semantic roles & 50–950 ramp

primary

#304AAB

secondary

#C3B274

accent

#C048DF

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #304AAB

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

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