#0A102C#0A102C

#0A102C is a very dark, muted blue. Relative luminance 0.006; OKLCH L 18.7% C 0.057 H 270.8°. Best body text is #FFFFFF at 18.69:1 contrast (WCAG AA passes).

Color values

HEX	#0A102C
RGB	rgb(10, 16, 44)
HSL	hsl(229, 63%, 11%)
HSV	hsv(229, 77%, 17%)
CMYK	cmyk(77.3%, 63.6%, 0%, 82.7%)
CIE-LAB	lab(5.57, 7.31, -19.35)
CIE-LCH	lch(5.57, 20.69, 290.70°)
OKLab	oklab(18.66% 0.0008 -0.057)
OKLCH	oklch(18.66% 0.057 270.8)
XYZ	xyz(0.7649, 0.6169, 2.4611)
Luminance	0.0062 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.36

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A102C #2C260A

analogous

#0A212C #0A102C #150A2C

triadic

#0A102C #2C0A10 #102C0A

tetradic

#0A102C #2C0A21 #2C260A #0A2C15

square

#0A102C #2C0A21 #2C260A #0A2C15

split-complementary

#0A102C #2C150A #212C0A

monochromatic

#060919 #060919 #0A102C #15225E #213490

Accessibility & contrast

On white

18.69

#0A102C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.12

#0A102C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A102C

18.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A102C	#FFFFFF	#000000	##FFFFFF
##0A102C	1.00	18.69	1.12	18.69
#FFFFFF	18.69	1.00	21.00	1.00
#000000	1.12	21.00	1.00	21.00
##FFFFFF	18.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#02142D

Deuteranopia (green-blind)

#00112B

Tritanopia (blue-blind)

#00171B

Achromatopsia (no color)

#121212

Design tokens & code

CSS

--color: #0a102c;
/* rgb */ color: rgb(10, 16, 44);
/* oklch */ color: oklch(18.7% 0.057 270.8);

Tailwind

colors: {
  custom: {
    50: '#4d4e65',
    500: '#0a102c',
    950: '#000000',
  },
}

SCSS

$custom: #0a102c;
$custom-light: #4d4e65;
$custom-dark: #000000;

JSON

{
  "hex": "#0a102c",
  "rgb": {
    "r": 10,
    "g": 16,
    "b": 44
  },
  "hsl": {
    "h": 229.412,
    "s": 62.963,
    "l": 10.588
  },
  "oklch": {
    "l": 0.1866,
    "c": 0.05697,
    "h": 270.8
  },
  "luminance": 0.00617
}

Semantic roles & 50–950 ramp

primary

#0A102C

secondary

#695E29

accent

#C942E6

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010105

muted

#77777A

Preview Lab

Preview with #0A102C

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

Preview Lab → · Contrast checker → · Palette generator →