#0A233F#0A233F

#0A233F is a dark, moderate cyan. Relative luminance 0.016; OKLCH L 25.4% C 0.061 H 253.5°. Best body text is #FFFFFF at 15.85:1 contrast (WCAG AA passes).

Color values

HEX	#0A233F
RGB	rgb(10, 35, 63)
HSL	hsl(212, 73%, 14%)
HSV	hsv(212, 84%, 25%)
CMYK	cmyk(84.1%, 44.4%, 0%, 75.3%)
CIE-LAB	lab(13.38, 2.10, -20.62)
CIE-LCH	lch(13.38, 20.73, 275.83°)
OKLab	oklab(25.37% -0.0174 -0.0588)
OKLCH	oklch(25.37% 0.061 253.5)
XYZ	xyz(1.6231, 1.6253, 4.9298)
Luminance	0.0163 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A233F #3F260A

analogous

#0A3E3F #0A233F #0C0A3F

triadic

#0A233F #3F0A23 #233F0A

tetradic

#0A233F #3F0A3E #3F260A #0A3F0C

square

#0A233F #3F0A3E #3F260A #0A3F0C

split-complementary

#0A233F #3F0C0A #3E3F0A

monochromatic

#040F1A #040F1A #0A233F #124074 #1B5EA9

Accessibility & contrast

On white

15.85

#0A233F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#0A233F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A233F

15.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A233F	#FFFFFF	#000000	##FFFFFF
##0A233F	1.00	15.85	1.33	15.85
#FFFFFF	15.85	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#162540

Deuteranopia (green-blind)

#0E203E

Tritanopia (blue-blind)

#002A2D

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #0a233f;
/* rgb */ color: rgb(10, 35, 63);
/* oklch */ color: oklch(25.4% 0.061 253.5);

Tailwind

colors: {
  custom: {
    50: '#525d74',
    500: '#0a233f',
    950: '#000000',
  },
}

SCSS

$custom: #0a233f;
$custom-light: #525d74;
$custom-dark: #000000;

JSON

{
  "hex": "#0a233f",
  "rgb": {
    "r": 10,
    "g": 35,
    "b": 63
  },
  "hsl": {
    "h": 211.698,
    "s": 72.603,
    "l": 14.314
  },
  "oklch": {
    "l": 0.25365,
    "c": 0.06133,
    "h": 253.5
  },
  "luminance": 0.01625
}

Semantic roles & 50–950 ramp

primary

#0A233F

secondary

#7C5529

accent

#9938EF

background

#F4F5F7

surface

#E7E9ED

border

#C3C5C8

text

#020408

muted

#78797B

Preview Lab

Preview with #0A233F

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

Preview Lab → · Contrast checker → · Palette generator →