#0A283F#0A283F

#0A283F is a dark, muted cyan. Relative luminance 0.019; OKLCH L 26.8% C 0.055 H 245.4°. Best body text is #FFFFFF at 15.13:1 contrast (WCAG AA passes).

Color values

HEX	#0A283F
RGB	rgb(10, 40, 63)
HSL	hsl(206, 73%, 14%)
HSV	hsv(206, 84%, 25%)
CMYK	cmyk(84.1%, 36.5%, 0%, 75.3%)
CIE-LAB	lab(15.17, -1.57, -17.79)
CIE-LCH	lch(15.17, 17.86, 264.96°)
OKLab	oklab(26.77% -0.0231 -0.0504)
OKLCH	oklch(26.77% 0.055 245.4)
XYZ	xyz(1.7808, 1.9408, 4.9824)
Luminance	0.0194 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A283F #3F210A

analogous

#0A3F3C #0A283F #0A0D3F

triadic

#0A283F #3F0A28 #283F0A

tetradic

#0A283F #3C0A3F #3F210A #0D3F0A

square

#0A283F #3C0A3F #3F210A #0D3F0A

split-complementary

#0A283F #3F0A0D #3F3C0A

monochromatic

#04111A #04111A #0A283F #124A74 #1B6BA9

Accessibility & contrast

On white

15.13

#0A283F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#0A283F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A283F

15.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A283F	#FFFFFF	#000000	##FFFFFF
##0A283F	1.00	15.13	1.39	15.13
#FFFFFF	15.13	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D2940

Deuteranopia (green-blind)

#16243F

Tritanopia (blue-blind)

#002E30

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #0a283f;
/* rgb */ color: rgb(10, 40, 63);
/* oklch */ color: oklch(26.8% 0.055 245.4);

Tailwind

colors: {
  custom: {
    50: '#526174',
    500: '#0a283f',
    950: '#000000',
  },
}

SCSS

$custom: #0a283f;
$custom-light: #526174;
$custom-dark: #000000;

JSON

{
  "hex": "#0a283f",
  "rgb": {
    "r": 10,
    "g": 40,
    "b": 63
  },
  "hsl": {
    "h": 206.038,
    "s": 72.603,
    "l": 14.314
  },
  "oklch": {
    "l": 0.26769,
    "c": 0.05547,
    "h": 245.4
  },
  "luminance": 0.01941
}

Semantic roles & 50–950 ramp

primary

#0A283F

secondary

#7C4D29

accent

#8838EF

background

#F4F5F7

surface

#E7E9ED

border

#C3C5C8

text

#020508

muted

#78797B

Preview Lab

Preview with #0A283F

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

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