#05303B#05303B

#05303B is a dark, muted cyan. Relative luminance 0.025; OKLCH L 28.7% C 0.048 H 219.6°. Best body text is #FFFFFF at 14.07:1 contrast (WCAG AA passes).

Color values

HEX	#05303B
RGB	rgb(5, 48, 59)
HSL	hsl(192, 84%, 13%)
HSV	hsv(192, 92%, 23%)
CMYK	cmyk(91.5%, 18.6%, 0%, 76.9%)
CIE-LAB	lab(17.74, -9.55, -11.03)
CIE-LCH	lch(17.74, 14.59, 229.11°)
OKLab	oklab(28.7% -0.0373 -0.0309)
OKLCH	oklch(28.7% 0.048 219.6)
XYZ	xyz(1.9086, 2.4617, 4.5114)
Luminance	0.0246 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#05303B #3B1005

analogous

#053B2B #05303B #05153B

triadic

#05303B #3B0530 #303B05

tetradic

#05303B #2B053B #3B1005 #153B05

square

#05303B #2B053B #3B1005 #153B05

split-complementary

#05303B #3B0515 #3B2B05

monochromatic

#02171C #02171C #05303B #0A5E73 #0F8CAC

Accessibility & contrast

On white

14.07

#05303B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#05303B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #05303B

14.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##05303B	#FFFFFF	#000000	##FFFFFF
##05303B	1.00	14.07	1.49	14.07
#FFFFFF	14.07	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#292E3C

Deuteranopia (green-blind)

#22293B

Tritanopia (blue-blind)

#003434

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #05303b;
/* rgb */ color: rgb(5, 48, 59);
/* oklch */ color: oklch(28.7% 0.048 219.6);

Tailwind

colors: {
  custom: {
    50: '#506871',
    500: '#05303b',
    950: '#000000',
  },
}

SCSS

$custom: #05303b;
$custom-light: #506871;
$custom-dark: #000000;

JSON

{
  "hex": "#05303b",
  "rgb": {
    "r": 5,
    "g": 48,
    "b": 59
  },
  "hsl": {
    "h": 192.222,
    "s": 84.375,
    "l": 12.549
  },
  "oklch": {
    "l": 0.28702,
    "c": 0.04846,
    "h": 219.6
  },
  "luminance": 0.02462
}

Semantic roles & 50–950 ramp

primary

#05303B

secondary

#7C3320

accent

#572DFB

background

#F4F6F6

surface

#E7EBEC

border

#C3C6C7

text

#020607

muted

#787A7A

Preview Lab

Preview with #05303B

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

Preview Lab → · Contrast checker → · Palette generator →