#304B84#304B84

#304B84 is a dark, moderate blue. Relative luminance 0.073; OKLCH L 42.1% C 0.101 H 263.6°. Best body text is #FFFFFF at 8.52:1 contrast (WCAG AA passes).

Color values

HEX	#304B84
RGB	rgb(48, 75, 132)
HSL	hsl(221, 47%, 35%)
HSV	hsv(221, 64%, 52%)
CMYK	cmyk(63.6%, 43.2%, 0%, 48.2%)
CIE-LAB	lab(32.54, 8.98, -35.12)
CIE-LCH	lch(32.54, 36.25, 284.34°)
OKLab	oklab(42.14% -0.0113 -0.1)
OKLCH	oklch(42.14% 0.101 263.6)
XYZ	xyz(7.8984, 7.3258, 22.8231)
Luminance	0.0733 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304B84 #846930

analogous

#307584 #304B84 #3F3084

triadic

#304B84 #84304B #4B8430

tetradic

#304B84 #843075 #846930 #30843F

square

#304B84 #843075 #846930 #30843F

split-complementary

#304B84 #843F30 #758430

monochromatic

#0F182A #203157 #304B84 #4065B1 #6786C8

Accessibility & contrast

On white

8.52

#304B84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#304B84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304B84

8.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304B84	#FFFFFF	#000000	##FFFFFF
##304B84	1.00	8.52	2.47	8.52
#FFFFFF	8.52	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#315186

Deuteranopia (green-blind)

#254983

Tritanopia (blue-blind)

#005861

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #304b84;
/* rgb */ color: rgb(48, 75, 132);
/* oklch */ color: oklch(42.1% 0.101 263.6);

Tailwind

colors: {
  custom: {
    50: '#717ca8',
    500: '#304b84',
    950: '#000000',
  },
}

SCSS

$custom: #304b84;
$custom-light: #717ca8;
$custom-dark: #000000;

JSON

{
  "hex": "#304b84",
  "rgb": {
    "r": 48,
    "g": 75,
    "b": 132
  },
  "hsl": {
    "h": 220.714,
    "s": 46.667,
    "l": 35.294
  },
  "oklch": {
    "l": 0.4214,
    "c": 0.10063,
    "h": 263.6
  },
  "luminance": 0.07326
}

Semantic roles & 50–950 ramp

primary

#304B84

secondary

#AF9661

accent

#AC51D6

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#08090F

muted

#7B7B7F

Preview Lab

Preview with #304B84

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

Preview Lab → · Contrast checker → · Palette generator →