#100D47#100D47

#100D47 is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.4% C 0.103 H 275.6°. Best body text is #FFFFFF at 17.94:1 contrast (WCAG AA passes).

Color values

HEX	#100D47
RGB	rgb(16, 13, 71)
HSL	hsl(243, 69%, 16%)
HSV	hsv(243, 82%, 28%)
CMYK	cmyk(77.5%, 81.7%, 0%, 72.2%)
CIE-LAB	lab(7.70, 23.10, -35.43)
CIE-LCH	lch(7.70, 42.30, 303.10°)
OKLab	oklab(21.42% 0.01 -0.1024)
OKLCH	oklch(21.42% 0.103 275.6)
XYZ	xyz(1.4946, 0.8528, 6.0459)
Luminance	0.0085 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100D47 #44470D

analogous

#0D2747 #100D47 #2D0D47

triadic

#100D47 #47100D #0D4710

tetradic

#100D47 #470D27 #44470D #0D472D

square

#100D47 #470D27 #44470D #0D472D

split-complementary

#100D47 #472D0D #27470D

monochromatic

#06051A #06051A #100D47 #1C167B #2720AE

Accessibility & contrast

On white

17.94

#100D47 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#100D47 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100D47

17.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100D47	#FFFFFF	#000000	##FFFFFF
##100D47	1.00	17.94	1.17	17.94
#FFFFFF	17.94	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	17.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001949

Deuteranopia (green-blind)

#001446

Tritanopia (blue-blind)

#001E29

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #100d47;
/* rgb */ color: rgb(16, 13, 71);
/* oklch */ color: oklch(21.4% 0.103 275.6);

Tailwind

colors: {
  custom: {
    50: '#584c7b',
    500: '#100d47',
    950: '#000000',
  },
}

SCSS

$custom: #100d47;
$custom-light: #584c7b;
$custom-dark: #000000;

JSON

{
  "hex": "#100d47",
  "rgb": {
    "r": 16,
    "g": 13,
    "b": 71
  },
  "hsl": {
    "h": 243.103,
    "s": 69.048,
    "l": 16.471
  },
  "oklch": {
    "l": 0.21421,
    "c": 0.10292,
    "h": 275.6
  },
  "luminance": 0.00853
}

Semantic roles & 50–950 ramp

primary

#100D47

secondary

#7E822D

accent

#EC3CE3

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#040109

muted

#79777B

Preview Lab

Preview with #100D47

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

Preview Lab → · Contrast checker → · Palette generator →