#0A103E#0A103E

#0A103E is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 20.5% C 0.087 H 270.6°. Best body text is #FFFFFF at 18.16:1 contrast (WCAG AA passes).

Color values

HEX	#0A103E
RGB	rgb(10, 16, 62)
HSL	hsl(233, 72%, 14%)
HSV	hsv(233, 84%, 24%)
CMYK	cmyk(83.9%, 74.2%, 0%, 75.7%)
CIE-LAB	lab(7.07, 16.32, -30.11)
CIE-LCH	lch(7.07, 34.25, 298.46°)
OKLab	oklab(20.52% 0.001 -0.0872)
OKLCH	oklch(20.52% 0.087 270.6)
XYZ	xyz(1.1797, 0.7828, 4.6454)
Luminance	0.0078 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A103E #3E380A

analogous

#0A2A3E #0A103E #1E0A3E

triadic

#0A103E #3E0A10 #103E0A

tetradic

#0A103E #3E0A2A #3E380A #0A3E1E

square

#0A103E #3E0A2A #3E380A #0A3E1E

split-complementary

#0A103E #3E1E0A #2A3E0A

monochromatic

#04071A #04071A #0A103E #131E73 #1B2BA7

Accessibility & contrast

On white

18.16

#0A103E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.16

#0A103E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A103E

18.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A103E	#FFFFFF	#000000	##FFFFFF
##0A103E	1.00	18.16	1.16	18.16
#FFFFFF	18.16	1.00	21.00	1.00
#000000	1.16	21.00	1.00	21.00
##FFFFFF	18.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00183F

Deuteranopia (green-blind)

#00133D

Tritanopia (blue-blind)

#001C25

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #0a103e;
/* rgb */ color: rgb(10, 16, 62);
/* oklch */ color: oklch(20.5% 0.087 270.6);

Tailwind

colors: {
  custom: {
    50: '#534e74',
    500: '#0a103e',
    950: '#000000',
  },
}

SCSS

$custom: #0a103e;
$custom-light: #534e74;
$custom-dark: #000000;

JSON

{
  "hex": "#0a103e",
  "rgb": {
    "r": 10,
    "g": 16,
    "b": 62
  },
  "hsl": {
    "h": 233.077,
    "s": 72.222,
    "l": 14.118
  },
  "oklch": {
    "l": 0.20515,
    "c": 0.08724,
    "h": 270.6
  },
  "luminance": 0.00783
}

Semantic roles & 50–950 ramp

primary

#0A103E

secondary

#7B7228

accent

#DA39EF

background

#F5F4F7

surface

#E8E7ED

border

#C4C3C8

text

#030108

muted

#78777B

Preview Lab

Preview with #0A103E

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

Preview Lab → · Contrast checker → · Palette generator →