#100A3D#100A3D

#100A3D is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 19.7% C 0.092 H 279.1°. Best body text is #FFFFFF at 18.54:1 contrast (WCAG AA passes).

Color values

HEX	#100A3D
RGB	rgb(16, 10, 61)
HSL	hsl(247, 72%, 14%)
HSV	hsv(247, 84%, 24%)
CMYK	cmyk(73.8%, 83.6%, 0%, 76.1%)
CIE-LAB	lab(6.00, 20.44, -31.12)
CIE-LCH	lch(6.00, 37.23, 303.29°)
OKLab	oklab(19.72% 0.0145 -0.0908)
OKLCH	oklch(19.72% 0.092 279.1)
XYZ	xyz(1.1643, 0.6641, 4.4808)
Luminance	0.0066 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100A3D #373D0A

analogous

#0A1E3D #100A3D #2A0A3D

triadic

#100A3D #3D100A #0A3D10

tetradic

#100A3D #3D0A1E #373D0A #0A3D2A

square

#100A3D #3D0A1E #373D0A #0A3D2A

split-complementary

#100A3D #3D2A0A #1E3D0A

monochromatic

#07041A #07041A #100A3D #1E1372 #2C1BA6

Accessibility & contrast

On white

18.54

#100A3D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#100A3D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100A3D

18.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100A3D	#FFFFFF	#000000	##FFFFFF
##100A3D	1.00	18.54	1.13	18.54
#FFFFFF	18.54	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00153E

Deuteranopia (green-blind)

#00113C

Tritanopia (blue-blind)

#001822

Achromatopsia (no color)

#131313

Design tokens & code

CSS

--color: #100a3d;
/* rgb */ color: rgb(16, 10, 61);
/* oklch */ color: oklch(19.7% 0.092 279.1);

Tailwind

colors: {
  custom: {
    50: '#554a73',
    500: '#100a3d',
    950: '#000000',
  },
}

SCSS

$custom: #100a3d;
$custom-light: #554a73;
$custom-dark: #000000;

JSON

{
  "hex": "#100a3d",
  "rgb": {
    "r": 16,
    "g": 10,
    "b": 61
  },
  "hsl": {
    "h": 247.059,
    "s": 71.831,
    "l": 13.922
  },
  "oklch": {
    "l": 0.19719,
    "c": 0.09196,
    "h": 279.1
  },
  "luminance": 0.00664
}

Semantic roles & 50–950 ramp

primary

#100A3D

secondary

#717A28

accent

#EF39D9

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030108

muted

#78777B

Preview Lab

Preview with #100A3D

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

Preview Lab → · Contrast checker → · Palette generator →