#304178#304178

#304178 is a dark, moderate blue. Relative luminance 0.058; OKLCH L 39.0% C 0.096 H 268.8°. Best body text is #FFFFFF at 9.75:1 contrast (WCAG AA passes).

Color values

HEX	#304178
RGB	rgb(48, 65, 120)
HSL	hsl(226, 43%, 33%)
HSV	hsv(226, 60%, 47%)
CMYK	cmyk(60%, 45.8%, 0%, 52.9%)
CIE-LAB	lab(28.81, 11.30, -33.59)
CIE-LCH	lch(28.81, 35.44, 288.60°)
OKLab	oklab(39.03% -0.0021 -0.0956)
OKLCH	oklch(39.03% 0.096 268.8)
XYZ	xyz(6.4983, 5.7645, 18.5359)
Luminance	0.0576 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304178 #786730

analogous

#306578 #304178 #433078

triadic

#304178 #783041 #417830

tetradic

#304178 #783065 #786730 #307843

square

#304178 #783065 #786730 #307843

split-complementary

#304178 #784330 #657830

monochromatic

#0D1221 #1F294C #304178 #4159A4 #6278C0

Accessibility & contrast

On white

9.75

#304178 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#304178 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304178

9.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304178	#FFFFFF	#000000	##FFFFFF
##304178	1.00	9.75	2.15	9.75
#FFFFFF	9.75	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#28477A

Deuteranopia (green-blind)

#1F4177

Tritanopia (blue-blind)

#004D56

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #304178;
/* rgb */ color: rgb(48, 65, 120);
/* oklch */ color: oklch(39.0% 0.096 268.8);

Tailwind

colors: {
  custom: {
    50: '#6f759f',
    500: '#304178',
    950: '#000000',
  },
}

SCSS

$custom: #304178;
$custom-light: #6f759f;
$custom-dark: #000000;

JSON

{
  "hex": "#304178",
  "rgb": {
    "r": 48,
    "g": 65,
    "b": 120
  },
  "hsl": {
    "h": 225.833,
    "s": 42.857,
    "l": 32.941
  },
  "oklch": {
    "l": 0.39035,
    "c": 0.09565,
    "h": 268.8
  },
  "luminance": 0.05765
}

Semantic roles & 50–950 ramp

primary

#304178

secondary

#A7965C

accent

#B555D3

background

#F6F7F9

surface

#ECEDF2

border

#C7C8CC

text

#08080E

muted

#7B7B7E

Preview Lab

Preview with #304178

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

Preview Lab → · Contrast checker → · Palette generator →