#100D2B#100D2B

#100D2B is a very dark, muted blue. Relative luminance 0.006; OKLCH L 18.4% C 0.059 H 283.5°. Best body text is #FFFFFF at 18.84:1 contrast (WCAG AA passes).

Color values

HEX	#100D2B
RGB	rgb(16, 13, 43)
HSL	hsl(246, 54%, 11%)
HSV	hsv(246, 70%, 17%)
CMYK	cmyk(62.8%, 69.8%, 0%, 83.1%)
CIE-LAB	lab(5.17, 10.22, -19.21)
CIE-LCH	lch(5.17, 21.76, 298.01°)
OKLab	oklab(18.38% 0.0137 -0.057)
OKLCH	oklch(18.38% 0.059 283.5)
XYZ	xyz(0.7935, 0.5724, 2.3537)
Luminance	0.0057 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.16

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100D2B #282B0D

analogous

#0D192B #100D2B #1F0D2B

triadic

#100D2B #2B100D #0D2B10

tetradic

#100D2B #2B0D19 #282B0D #0D2B1F

square

#100D2B #2B0D19 #282B0D #0D2B1F

split-complementary

#100D2B #2B1F0D #192B0D

monochromatic

#090717 #090717 #100D2B #211B5A #332989

Accessibility & contrast

On white

18.84

#100D2B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#100D2B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100D2B

18.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100D2B	#FFFFFF	#000000	##FFFFFF
##100D2B	1.00	18.84	1.11	18.84
#FFFFFF	18.84	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00122C

Deuteranopia (green-blind)

#00102A

Tritanopia (blue-blind)

#06141A

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #100d2b;
/* rgb */ color: rgb(16, 13, 43);
/* oklch */ color: oklch(18.4% 0.059 283.5);

Tailwind

colors: {
  custom: {
    50: '#504c64',
    500: '#100d2b',
    950: '#000000',
  },
}

SCSS

$custom: #100d2b;
$custom-light: #504c64;
$custom-dark: #000000;

JSON

{
  "hex": "#100d2b",
  "rgb": {
    "r": 16,
    "g": 13,
    "b": 43
  },
  "hsl": {
    "h": 246,
    "s": 53.571,
    "l": 10.98
  },
  "oklch": {
    "l": 0.18378,
    "c": 0.05863,
    "h": 283.5
  },
  "luminance": 0.00572
}

Semantic roles & 50–950 ramp

primary

#100D2B

secondary

#60662E

accent

#DD4BCE

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020105

muted

#78777A

Preview Lab

Preview with #100D2B

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

Preview Lab → · Contrast checker → · Palette generator →