#304457#304457

#304457 is a dark, muted cyan. Relative luminance 0.055; OKLCH L 37.8% C 0.041 H 247.7°. Best body text is #FFFFFF at 10.05:1 contrast (WCAG AA passes).

Color values

HEX	#304457
RGB	rgb(48, 68, 87)
HSL	hsl(209, 29%, 26%)
HSV	hsv(209, 45%, 34%)
CMYK	cmyk(44.8%, 21.8%, 0%, 65.9%)
CIE-LAB	lab(27.98, -2.15, -13.81)
CIE-LCH	lch(27.98, 13.98, 261.13°)
OKLab	oklab(37.81% -0.0157 -0.0383)
OKLCH	oklch(37.81% 0.041 247.7)
XYZ	xyz(5.0058, 5.4504, 9.8032)
Luminance	0.0545 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304457 #574330

analogous

#305757 #304457 #303157

triadic

#304457 #573044 #445730

tetradic

#304457 #573057 #574330 #315730

square

#304457 #573057 #574330 #315730

split-complementary

#304457 #573031 #575730

monochromatic

#0B0F14 #1A2530 #304457 #46637E #5C82A5

Accessibility & contrast

On white

10.05

#304457 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#304457 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304457

10.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304457	#FFFFFF	#000000	##FFFFFF
##304457	1.00	10.05	2.09	10.05
#FFFFFF	10.05	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C4458

Deuteranopia (green-blind)

#384057

Tritanopia (blue-blind)

#22484A

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #304457;
/* rgb */ color: rgb(48, 68, 87);
/* oklch */ color: oklch(37.8% 0.041 247.7);

Tailwind

colors: {
  custom: {
    50: '#6a7786',
    500: '#304457',
    950: '#000000',
  },
}

SCSS

$custom: #304457;
$custom-light: #6a7786;
$custom-dark: #000000;

JSON

{
  "hex": "#304457",
  "rgb": {
    "r": 48,
    "g": 68,
    "b": 87
  },
  "hsl": {
    "h": 209.231,
    "s": 28.889,
    "l": 26.471
  },
  "oklch": {
    "l": 0.37814,
    "c": 0.04137,
    "h": 247.7
  },
  "luminance": 0.05451
}

Semantic roles & 50–950 ramp

primary

#304457

secondary

#88715A

accent

#9363C5

background

#F6F7F8

surface

#EBEDEF

border

#C6C8CA

text

#06080B

muted

#7A7B7C

Preview Lab

Preview with #304457

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

Preview Lab → · Contrast checker → · Palette generator →