#304579#304579

#304579 is a dark, moderate blue. Relative luminance 0.063; OKLCH L 40.0% C 0.092 H 265.8°. Best body text is #FFFFFF at 9.32:1 contrast (WCAG AA passes).

Color values

HEX	#304579
RGB	rgb(48, 69, 121)
HSL	hsl(223, 43%, 33%)
HSV	hsv(223, 60%, 47%)
CMYK	cmyk(60.3%, 43%, 0%, 52.5%)
CIE-LAB	lab(30.07, 8.96, -32.21)
CIE-LCH	lch(30.07, 33.43, 285.55°)
OKLab	oklab(40.02% -0.0067 -0.0915)
OKLCH	oklch(40.02% 0.092 265.8)
XYZ	xyz(6.7971, 6.2646, 18.9364)
Luminance	0.0626 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304579 #796430

analogous

#306979 #304579 #3F3079

triadic

#304579 #793045 #457930

tetradic

#304579 #793069 #796430 #30793F

square

#304579 #793069 #796430 #30793F

split-complementary

#304579 #793F30 #697930

monochromatic

#0D1321 #1F2C4D #304579 #415EA5 #627EC1

Accessibility & contrast

On white

9.32

#304579 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#304579 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304579

9.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304579	#FFFFFF	#000000	##FFFFFF
##304579	1.00	9.32	2.25	9.32
#FFFFFF	9.32	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F4A7B

Deuteranopia (green-blind)

#254478

Tritanopia (blue-blind)

#005159

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #304579;
/* rgb */ color: rgb(48, 69, 121);
/* oklch */ color: oklch(40.0% 0.092 265.8);

Tailwind

colors: {
  custom: {
    50: '#6f78a0',
    500: '#304579',
    950: '#000000',
  },
}

SCSS

$custom: #304579;
$custom-light: #6f78a0;
$custom-dark: #000000;

JSON

{
  "hex": "#304579",
  "rgb": {
    "r": 48,
    "g": 69,
    "b": 121
  },
  "hsl": {
    "h": 222.74,
    "s": 43.195,
    "l": 33.137
  },
  "oklch": {
    "l": 0.40023,
    "c": 0.09177,
    "h": 265.8
  },
  "luminance": 0.06265
}

Semantic roles & 50–950 ramp

primary

#304579

secondary

#A8925D

accent

#AF55D3

background

#F6F7F9

surface

#ECEDF2

border

#C7C8CC

text

#08080E

muted

#7B7B7E

Preview Lab

Preview with #304579

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

Preview Lab → · Contrast checker → · Palette generator →