#0A284A#0A284A

#0A284A is a dark, moderate cyan. Relative luminance 0.021; OKLCH L 27.6% C 0.072 H 254.2°. Best body text is #FFFFFF at 14.84:1 contrast (WCAG AA passes).

Color values

HEX	#0A284A
RGB	rgb(10, 40, 74)
HSL	hsl(212, 76%, 16%)
HSV	hsv(212, 86%, 29%)
CMYK	cmyk(86.5%, 45.9%, 0%, 71%)
CIE-LAB	lab(15.88, 3.31, -24.25)
CIE-LCH	lch(15.88, 24.47, 277.77°)
OKLab	oklab(27.56% -0.0197 -0.0693)
OKLCH	oklch(27.56% 0.072 254.2)
XYZ	xyz(2.1195, 2.0763, 6.7663)
Luminance	0.0208 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A284A #4A2C0A

analogous

#0A484A #0A284A #0C0A4A

triadic

#0A284A #4A0A28 #284A0A

tetradic

#0A284A #4A0A48 #4A2C0A #0A4A0C

square

#0A284A #4A0A48 #4A2C0A #0A4A0C

split-complementary

#0A284A #4A0C0A #484A0A

monochromatic

#040F1B #040F1B #0A284A #114580 #1962B6

Accessibility & contrast

On white

14.84

#0A284A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#0A284A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A284A

14.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A284A	#FFFFFF	#000000	##FFFFFF
##0A284A	1.00	14.84	1.42	14.84
#FFFFFF	14.84	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#172B4B

Deuteranopia (green-blind)

#0C2549

Tritanopia (blue-blind)

#003035

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #0a284a;
/* rgb */ color: rgb(10, 40, 74);
/* oklch */ color: oklch(27.6% 0.072 254.2);

Tailwind

colors: {
  custom: {
    50: '#55617d',
    500: '#0a284a',
    950: '#000000',
  },
}

SCSS

$custom: #0a284a;
$custom-light: #55617d;
$custom-dark: #000000;

JSON

{
  "hex": "#0a284a",
  "rgb": {
    "r": 10,
    "g": 40,
    "b": 74
  },
  "hsl": {
    "h": 211.875,
    "s": 76.19,
    "l": 16.471
  },
  "oklch": {
    "l": 0.27556,
    "c": 0.07209,
    "h": 254.2
  },
  "luminance": 0.02077
}

Semantic roles & 50–950 ramp

primary

#0A284A

secondary

#875B29

accent

#9A35F3

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#030509

muted

#78797B

Preview Lab

Preview with #0A284A

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

Preview Lab → · Contrast checker → · Palette generator →