#0A233E#0A233E

#0A233E is a dark, muted cyan. Relative luminance 0.016; OKLCH L 25.3% C 0.060 H 252.8°. Best body text is #FFFFFF at 15.88:1 contrast (WCAG AA passes).

Color values

HEX	#0A233E
RGB	rgb(10, 35, 62)
HSL	hsl(211, 72%, 14%)
HSV	hsv(211, 84%, 24%)
CMYK	cmyk(83.9%, 43.5%, 0%, 75.7%)
CIE-LAB	lab(13.32, 1.66, -20.03)
CIE-LCH	lch(13.32, 20.10, 274.73°)
OKLab	oklab(25.29% -0.0177 -0.0571)
OKLCH	oklch(25.29% 0.06 252.8)
XYZ	xyz(1.5954, 1.6142, 4.7840)
Luminance	0.0161 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A233E #3E250A

analogous

#0A3D3E #0A233E #0B0A3E

triadic

#0A233E #3E0A23 #233E0A

tetradic

#0A233E #3E0A3D #3E250A #0A3E0B

square

#0A233E #3E0A3D #3E250A #0A3E0B

split-complementary

#0A233E #3E0B0A #3D3E0A

monochromatic

#040F1A #040F1A #0A233E #134173 #1B5FA7

Accessibility & contrast

On white

15.88

#0A233E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#0A233E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A233E

15.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A233E	#FFFFFF	#000000	##FFFFFF
##0A233E	1.00	15.88	1.32	15.88
#FFFFFF	15.88	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#16253F

Deuteranopia (green-blind)

#0F203D

Tritanopia (blue-blind)

#00292D

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #0a233e;
/* rgb */ color: rgb(10, 35, 62);
/* oklch */ color: oklch(25.3% 0.060 252.8);

Tailwind

colors: {
  custom: {
    50: '#525d73',
    500: '#0a233e',
    950: '#000000',
  },
}

SCSS

$custom: #0a233e;
$custom-light: #525d73;
$custom-dark: #000000;

JSON

{
  "hex": "#0a233e",
  "rgb": {
    "r": 10,
    "g": 35,
    "b": 62
  },
  "hsl": {
    "h": 211.154,
    "s": 72.222,
    "l": 14.118
  },
  "oklch": {
    "l": 0.25291,
    "c": 0.05975,
    "h": 252.8
  },
  "luminance": 0.01614
}

Semantic roles & 50–950 ramp

primary

#0A233E

secondary

#7B5328

accent

#9739EF

background

#F4F5F7

surface

#E7E9ED

border

#C3C5C8

text

#020408

muted

#78797B

Preview Lab

Preview with #0A233E

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

Preview Lab → · Contrast checker → · Palette generator →