#0A283D#0A283D

#0A283D is a dark, muted cyan. Relative luminance 0.019; OKLCH L 26.6% C 0.053 H 243.1°. Best body text is #FFFFFF at 15.18:1 contrast (WCAG AA passes).

Color values

HEX	#0A283D
RGB	rgb(10, 40, 61)
HSL	hsl(205, 72%, 14%)
HSV	hsv(205, 84%, 24%)
CMYK	cmyk(83.6%, 34.4%, 0%, 76.1%)
CIE-LAB	lab(15.06, -2.44, -16.58)
CIE-LCH	lch(15.06, 16.76, 261.63°)
OKLab	oklab(26.64% -0.0238 -0.0469)
OKLCH	oklch(26.64% 0.053 243.1)
XYZ	xyz(1.7259, 1.9188, 4.6934)
Luminance	0.0192 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A283D #3D1F0A

analogous

#0A3D39 #0A283D #0A0F3D

triadic

#0A283D #3D0A28 #283D0A

tetradic

#0A283D #390A3D #3D1F0A #0F3D0A

square

#0A283D #390A3D #3D1F0A #0F3D0A

split-complementary

#0A283D #3D0A0F #3D390A

monochromatic

#04111A #04111A #0A283D #134A72 #1B6DA6

Accessibility & contrast

On white

15.18

#0A283D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#0A283D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A283D

15.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A283D	#FFFFFF	#000000	##FFFFFF
##0A283D	1.00	15.18	1.38	15.18
#FFFFFF	15.18	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E283E

Deuteranopia (green-blind)

#17243D

Tritanopia (blue-blind)

#002D2F

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #0a283d;
/* rgb */ color: rgb(10, 40, 61);
/* oklch */ color: oklch(26.6% 0.053 243.1);

Tailwind

colors: {
  custom: {
    50: '#516172',
    500: '#0a283d',
    950: '#000000',
  },
}

SCSS

$custom: #0a283d;
$custom-light: #516172;
$custom-dark: #000000;

JSON

{
  "hex": "#0a283d",
  "rgb": {
    "r": 10,
    "g": 40,
    "b": 61
  },
  "hsl": {
    "h": 204.706,
    "s": 71.831,
    "l": 13.922
  },
  "oklch": {
    "l": 0.26637,
    "c": 0.05263,
    "h": 243.1
  },
  "luminance": 0.01919
}

Semantic roles & 50–950 ramp

primary

#0A283D

secondary

#7A4A28

accent

#8439EF

background

#F4F5F6

surface

#E7E9EC

border

#C3C5C7

text

#020508

muted

#78797B

Preview Lab

Preview with #0A283D

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

Preview Lab → · Contrast checker → · Palette generator →