#100F3C#100F3C

#100F3C is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 20.5% C 0.084 H 277.1°. Best body text is #FFFFFF at 18.17:1 contrast (WCAG AA passes).

Color values

HEX	#100F3C
RGB	rgb(16, 15, 60)
HSL	hsl(241, 60%, 15%)
HSV	hsv(241, 75%, 24%)
CMYK	cmyk(73.3%, 75%, 0%, 76.5%)
CIE-LAB	lab(7.03, 17.17, -28.73)
CIE-LCH	lch(7.03, 33.46, 300.86°)
OKLab	oklab(20.53% 0.0103 -0.083)
OKLCH	oklch(20.53% 0.084 277.1)
XYZ	xyz(1.1999, 0.7780, 4.3610)
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

#100F3C #3B3C0F

analogous

#0F253C #100F3C #270F3C

triadic

#100F3C #3C100F #0F3C10

tetradic

#100F3C #3C0F25 #3B3C0F #0F3C27

square

#100F3C #3C0F25 #3B3C0F #0F3C27

split-complementary

#100F3C #3C270F #253C0F

monochromatic

#070618 #070618 #100F3C #1D1B6D #2A279E

Accessibility & contrast

On white

18.17

#100F3C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.16

#100F3C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100F3C

18.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100F3C	#FFFFFF	#000000	##FFFFFF
##100F3C	1.00	18.17	1.16	18.17
#FFFFFF	18.17	1.00	21.00	1.00
#000000	1.16	21.00	1.00	21.00
##FFFFFF	18.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00173D

Deuteranopia (green-blind)

#00143B

Tritanopia (blue-blind)

#001B23

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #100f3c;
/* rgb */ color: rgb(16, 15, 60);
/* oklch */ color: oklch(20.5% 0.084 277.1);

Tailwind

colors: {
  custom: {
    50: '#554d72',
    500: '#100f3c',
    950: '#000000',
  },
}

SCSS

$custom: #100f3c;
$custom-light: #554d72;
$custom-dark: #000000;

JSON

{
  "hex": "#100f3c",
  "rgb": {
    "r": 16,
    "g": 15,
    "b": 60
  },
  "hsl": {
    "h": 241.333,
    "s": 60,
    "l": 14.706
  },
  "oklch": {
    "l": 0.20534,
    "c": 0.08366,
    "h": 277.1
  },
  "luminance": 0.00778
}

Semantic roles & 50–950 ramp

primary

#100F3C

secondary

#757630

accent

#E345E0

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030108

muted

#78777B

Preview Lab

Preview with #100F3C

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

Preview Lab → · Contrast checker → · Palette generator →