#0A102E#0A102E

#0A102E is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 18.8% C 0.061 H 271.0°. Best body text is #FFFFFF at 18.64:1 contrast (WCAG AA passes).

Color values

HEX	#0A102E
RGB	rgb(10, 16, 46)
HSL	hsl(230, 64%, 11%)
HSV	hsv(230, 78%, 18%)
CMYK	cmyk(78.3%, 65.2%, 0%, 82%)
CIE-LAB	lab(5.71, 8.29, -20.63)
CIE-LCH	lch(5.71, 22.23, 291.90°)
OKLab	oklab(18.85% 0.001 -0.0605)
OKLCH	oklch(18.85% 0.061 271)
XYZ	xyz(0.8034, 0.6323, 2.6639)
Luminance	0.0063 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 5.69

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A102E #2E280A

analogous

#0A222E #0A102E #160A2E

triadic

#0A102E #2E0A10 #102E0A

tetradic

#0A102E #2E0A22 #2E280A #0A2E16

square

#0A102E #2E0A22 #2E280A #0A2E16

split-complementary

#0A102E #2E160A #222E0A

monochromatic

#050919 #050919 #0A102E #152160 #203393

Accessibility & contrast

On white

18.64

#0A102E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#0A102E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A102E

18.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A102E	#FFFFFF	#000000	##FFFFFF
##0A102E	1.00	18.64	1.13	18.64
#FFFFFF	18.64	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#01142F

Deuteranopia (green-blind)

#00112D

Tritanopia (blue-blind)

#00171C

Achromatopsia (no color)

#131313

Design tokens & code

CSS

--color: #0a102e;
/* rgb */ color: rgb(10, 16, 46);
/* oklch */ color: oklch(18.8% 0.061 271.0);

Tailwind

colors: {
  custom: {
    50: '#4d4e67',
    500: '#0a102e',
    950: '#000000',
  },
}

SCSS

$custom: #0a102e;
$custom-light: #4d4e67;
$custom-dark: #000000;

JSON

{
  "hex": "#0a102e",
  "rgb": {
    "r": 10,
    "g": 16,
    "b": 46
  },
  "hsl": {
    "h": 230,
    "s": 64.286,
    "l": 10.98
  },
  "oklch": {
    "l": 0.18848,
    "c": 0.06053,
    "h": 271
  },
  "luminance": 0.00632
}

Semantic roles & 50–950 ramp

primary

#0A102E

secondary

#6B6029

accent

#CB41E7

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020106

muted

#78777A

Preview Lab

Preview with #0A102E

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

Preview Lab → · Contrast checker → · Palette generator →