#0A284E#0A284E

#0A284E is a dark, moderate cyan. Relative luminance 0.021; OKLCH L 27.9% C 0.078 H 256.2°. Best body text is #FFFFFF at 14.72:1 contrast (WCAG AA passes).

Color values

HEX	#0A284E
RGB	rgb(10, 40, 78)
HSL	hsl(214, 77%, 17%)
HSV	hsv(214, 87%, 31%)
CMYK	cmyk(87.2%, 48.7%, 0%, 69.4%)
CIE-LAB	lab(16.16, 5.11, -26.52)
CIE-LCH	lch(16.16, 27.01, 280.90°)
OKLab	oklab(27.87% -0.0187 -0.076)
OKLCH	oklch(27.87% 0.078 256.2)
XYZ	xyz(2.2586, 2.1319, 7.4987)
Luminance	0.0213 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A284E #4E300A

analogous

#0A4A4E #0A284E #0E0A4E

triadic

#0A284E #4E0A28 #284E0A

tetradic

#0A284E #4E0A4A #4E300A #0A4E0E

square

#0A284E #4E0A4A #4E300A #0A4E0E

split-complementary

#0A284E #4E0E0A #4A4E0A

monochromatic

#030E1B #030E1B #0A284E #114484 #1860BA

Accessibility & contrast

On white

14.72

#0A284E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#0A284E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A284E

14.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A284E	#FFFFFF	#000000	##FFFFFF
##0A284E	1.00	14.72	1.43	14.72
#FFFFFF	14.72	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#142B4F

Deuteranopia (green-blind)

#07254D

Tritanopia (blue-blind)

#003137

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #0a284e;
/* rgb */ color: rgb(10, 40, 78);
/* oklch */ color: oklch(27.9% 0.078 256.2);

Tailwind

colors: {
  custom: {
    50: '#566180',
    500: '#0a284e',
    950: '#000000',
  },
}

SCSS

$custom: #0a284e;
$custom-light: #566180;
$custom-dark: #000000;

JSON

{
  "hex": "#0a284e",
  "rgb": {
    "r": 10,
    "g": 40,
    "b": 78
  },
  "hsl": {
    "h": 213.529,
    "s": 77.273,
    "l": 17.255
  },
  "oklch": {
    "l": 0.27866,
    "c": 0.0783,
    "h": 256.2
  },
  "luminance": 0.02132
}

Semantic roles & 50–950 ramp

primary

#0A284E

secondary

#8B6029

accent

#9F34F4

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#03050A

muted

#78797C

Preview Lab

Preview with #0A284E

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

Preview Lab → · Contrast checker → · Palette generator →