#0A2143#0A2143

#0A2143 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.1% C 0.070 H 258.4°. Best body text is #FFFFFF at 16.01:1 contrast (WCAG AA passes).

Color values

HEX	#0A2143
RGB	rgb(10, 33, 67)
HSL	hsl(216, 74%, 15%)
HSV	hsv(216, 85%, 26%)
CMYK	cmyk(85.1%, 50.7%, 0%, 73.7%)
CIE-LAB	lab(12.97, 5.43, -24.08)
CIE-LCH	lch(12.97, 24.69, 282.71°)
OKLab	oklab(25.13% -0.0142 -0.069)
OKLCH	oklch(25.13% 0.07 258.4)
XYZ	xyz(1.6818, 1.5573, 5.5211)
Luminance	0.0156 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A2143 #432C0A

analogous

#0A3E43 #0A2143 #0F0A43

triadic

#0A2143 #430A21 #21430A

tetradic

#0A2143 #430A3E #432C0A #0A430F

square

#0A2143 #430A3E #432C0A #0A430F

split-complementary

#0A2143 #430F0A #3E430A

monochromatic

#040D1B #040D1B #0A2143 #123B78 #1A55AE

Accessibility & contrast

On white

16.01

#0A2143 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#0A2143 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A2143

16.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A2143	#FFFFFF	#000000	##FFFFFF
##0A2143	1.00	16.01	1.31	16.01
#FFFFFF	16.01	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F2444

Deuteranopia (green-blind)

#051F42

Tritanopia (blue-blind)

#00292E

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #0a2143;
/* rgb */ color: rgb(10, 33, 67);
/* oklch */ color: oklch(25.1% 0.070 258.4);

Tailwind

colors: {
  custom: {
    50: '#535b77',
    500: '#0a2143',
    950: '#000000',
  },
}

SCSS

$custom: #0a2143;
$custom-light: #535b77;
$custom-dark: #000000;

JSON

{
  "hex": "#0a2143",
  "rgb": {
    "r": 10,
    "g": 33,
    "b": 67
  },
  "hsl": {
    "h": 215.789,
    "s": 74.026,
    "l": 15.098
  },
  "oklch": {
    "l": 0.25134,
    "c": 0.07047,
    "h": 258.4
  },
  "luminance": 0.01557
}

Semantic roles & 50–950 ramp

primary

#0A2143

secondary

#805D29

accent

#A637F1

background

#F5F5F7

surface

#E8E9ED

border

#C4C5C8

text

#030408

muted

#78797B

Preview Lab

Preview with #0A2143

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

Preview Lab → · Contrast checker → · Palette generator →