#304B85#304B85

#304B85 is a dark, moderate blue. Relative luminance 0.074; OKLCH L 42.2% C 0.102 H 263.8°. Best body text is #FFFFFF at 8.50:1 contrast (WCAG AA passes).

Color values

HEX	#304B85
RGB	rgb(48, 75, 133)
HSL	hsl(221, 47%, 35%)
HSV	hsv(221, 64%, 52%)
CMYK	cmyk(63.9%, 43.6%, 0%, 47.8%)
CIE-LAB	lab(32.60, 9.35, -35.64)
CIE-LCH	lch(32.60, 36.85, 284.70°)
OKLab	oklab(42.21% -0.0111 -0.1015)
OKLCH	oklch(42.21% 0.102 263.8)
XYZ	xyz(7.9672, 7.3533, 23.1852)
Luminance	0.0735 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304B85 #856A30

analogous

#307585 #304B85 #3F3085

triadic

#304B85 #85304B #4B8530

tetradic

#304B85 #853075 #856A30 #30853F

square

#304B85 #853075 #856A30 #30853F

split-complementary

#304B85 #853F30 #758530

monochromatic

#10182B #203258 #304B85 #4064B2 #6786C8

Accessibility & contrast

On white

8.50

#304B85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#304B85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304B85

8.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304B85	#FFFFFF	#000000	##FFFFFF
##304B85	1.00	8.50	2.47	8.50
#FFFFFF	8.50	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#315187

Deuteranopia (green-blind)

#244984

Tritanopia (blue-blind)

#005861

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #304b85;
/* rgb */ color: rgb(48, 75, 133);
/* oklch */ color: oklch(42.2% 0.102 263.8);

Tailwind

colors: {
  custom: {
    50: '#717ca9',
    500: '#304b85',
    950: '#000000',
  },
}

SCSS

$custom: #304b85;
$custom-light: #717ca9;
$custom-dark: #000000;

JSON

{
  "hex": "#304b85",
  "rgb": {
    "r": 48,
    "g": 75,
    "b": 133
  },
  "hsl": {
    "h": 220.941,
    "s": 46.961,
    "l": 35.49
  },
  "oklch": {
    "l": 0.42206,
    "c": 0.10213,
    "h": 263.8
  },
  "luminance": 0.07354
}

Semantic roles & 50–950 ramp

primary

#304B85

secondary

#AF9761

accent

#AC51D7

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#080910

muted

#7B7B7F

Preview Lab

Preview with #304B85

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

Preview Lab → · Contrast checker → · Palette generator →