#304657#304657

#304657 is a dark, muted cyan. Relative luminance 0.057; OKLCH L 38.3% C 0.040 H 242.3°. Best body text is #FFFFFF at 9.82:1 contrast (WCAG AA passes).

Color values

HEX	#304657
RGB	rgb(48, 70, 87)
HSL	hsl(206, 29%, 26%)
HSV	hsv(206, 45%, 34%)
CMYK	cmyk(44.8%, 19.5%, 0%, 65.9%)
CIE-LAB	lab(28.63, -3.44, -12.81)
CIE-LCH	lch(28.63, 13.27, 254.95°)
OKLab	oklab(38.33% -0.0186 -0.0354)
OKLCH	oklch(38.33% 0.04 242.3)
XYZ	xyz(5.1288, 5.6965, 9.8443)
Luminance	0.0570 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304657 #574130

analogous

#305755 #304657 #303357

triadic

#304657 #573046 #465730

tetradic

#304657 #553057 #574130 #335730

square

#304657 #553057 #574130 #335730

split-complementary

#304657 #573033 #575530

monochromatic

#0B1014 #1A2630 #304657 #46667E #5C85A5

Accessibility & contrast

On white

9.82

#304657 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#304657 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304657

9.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304657	#FFFFFF	#000000	##FFFFFF
##304657	1.00	9.82	2.14	9.82
#FFFFFF	9.82	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F4658

Deuteranopia (green-blind)

#3A4257

Tritanopia (blue-blind)

#214A4C

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #304657;
/* rgb */ color: rgb(48, 70, 87);
/* oklch */ color: oklch(38.3% 0.040 242.3);

Tailwind

colors: {
  custom: {
    50: '#6a7986',
    500: '#304657',
    950: '#000000',
  },
}

SCSS

$custom: #304657;
$custom-light: #6a7986;
$custom-dark: #000000;

JSON

{
  "hex": "#304657",
  "rgb": {
    "r": 48,
    "g": 70,
    "b": 87
  },
  "hsl": {
    "h": 206.154,
    "s": 28.889,
    "l": 26.471
  },
  "oklch": {
    "l": 0.38328,
    "c": 0.04004,
    "h": 242.3
  },
  "luminance": 0.05697
}

Semantic roles & 50–950 ramp

primary

#304657

secondary

#886E5A

accent

#8E63C5

background

#F6F7F8

surface

#EBEDEF

border

#C6C8CA

text

#06090B

muted

#7A7B7C

Preview Lab

Preview with #304657

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

Preview Lab → · Contrast checker → · Palette generator →