#100F47#100F47

#100F47 is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.8% C 0.100 H 274.9°. Best body text is #FFFFFF at 17.78:1 contrast (WCAG AA passes).

Color values

HEX	#100F47
RGB	rgb(16, 15, 71)
HSL	hsl(241, 65%, 17%)
HSV	hsv(241, 79%, 28%)
CMYK	cmyk(77.5%, 78.9%, 0%, 72.2%)
CIE-LAB	lab(8.19, 21.75, -34.64)
CIE-LCH	lch(8.19, 40.90, 302.13°)
OKLab	oklab(21.77% 0.0086 -0.1001)
OKLCH	oklch(21.77% 0.1 274.9)
XYZ	xyz(1.5215, 0.9066, 6.0548)
Luminance	0.0091 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100F47 #46470F

analogous

#0F2A47 #100F47 #2C0F47

triadic

#100F47 #47100F #0F4710

tetradic

#100F47 #470F2A #46470F #0F472C

square

#100F47 #470F2A #46470F #0F472C

split-complementary

#100F47 #472C0F #2A470F

monochromatic

#060519 #060519 #100F47 #1B1A7A #2724AC

Accessibility & contrast

On white

17.78

#100F47 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#100F47 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100F47

17.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100F47	#FFFFFF	#000000	##FFFFFF
##100F47	1.00	17.78	1.18	17.78
#FFFFFF	17.78	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001A49

Deuteranopia (green-blind)

#001546

Tritanopia (blue-blind)

#001F29

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #100f47;
/* rgb */ color: rgb(16, 15, 71);
/* oklch */ color: oklch(21.8% 0.100 274.9);

Tailwind

colors: {
  custom: {
    50: '#584d7b',
    500: '#100f47',
    950: '#000000',
  },
}

SCSS

$custom: #100f47;
$custom-light: #584d7b;
$custom-dark: #000000;

JSON

{
  "hex": "#100f47",
  "rgb": {
    "r": 16,
    "g": 15,
    "b": 71
  },
  "hsl": {
    "h": 241.071,
    "s": 65.116,
    "l": 16.863
  },
  "oklch": {
    "l": 0.2177,
    "c": 0.10048,
    "h": 274.9
  },
  "luminance": 0.00907
}

Semantic roles & 50–950 ramp

primary

#100F47

secondary

#808130

accent

#E840E5

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#040109

muted

#79777B

Preview Lab

Preview with #100F47

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

Preview Lab → · Contrast checker → · Palette generator →