#100F3D#100F3D

#100F3D is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 20.6% C 0.085 H 276.8°. Best body text is #FFFFFF at 18.14:1 contrast (WCAG AA passes).

Color values

HEX	#100F3D
RGB	rgb(16, 15, 61)
HSL	hsl(241, 61%, 15%)
HSV	hsv(241, 75%, 24%)
CMYK	cmyk(73.8%, 75.4%, 0%, 76.1%)
CIE-LAB	lab(7.12, 17.61, -29.29)
CIE-LCH	lch(7.12, 34.17, 301.01°)
OKLab	oklab(20.64% 0.0102 -0.0846)
OKLCH	oklch(20.64% 0.085 276.8)
XYZ	xyz(1.2265, 0.7886, 4.5016)
Luminance	0.0079 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100F3D #3C3D0F

analogous

#0F253D #100F3D #270F3D

triadic

#100F3D #3D100F #0F3D10

tetradic

#100F3D #3D0F25 #3C3D0F #0F3D27

square

#100F3D #3D0F25 #3C3D0F #0F3D27

split-complementary

#100F3D #3D270F #253D0F

monochromatic

#060619 #060619 #100F3D #1D1B6E #2A279F

Accessibility & contrast

On white

18.14

#100F3D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.16

#100F3D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100F3D

18.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100F3D	#FFFFFF	#000000	##FFFFFF
##100F3D	1.00	18.14	1.16	18.14
#FFFFFF	18.14	1.00	21.00	1.00
#000000	1.16	21.00	1.00	21.00
##FFFFFF	18.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00183E

Deuteranopia (green-blind)

#00143C

Tritanopia (blue-blind)

#001B24

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #100f3d;
/* rgb */ color: rgb(16, 15, 61);
/* oklch */ color: oklch(20.6% 0.085 276.8);

Tailwind

colors: {
  custom: {
    50: '#554d73',
    500: '#100f3d',
    950: '#000000',
  },
}

SCSS

$custom: #100f3d;
$custom-light: #554d73;
$custom-dark: #000000;

JSON

{
  "hex": "#100f3d",
  "rgb": {
    "r": 16,
    "g": 15,
    "b": 61
  },
  "hsl": {
    "h": 241.304,
    "s": 60.526,
    "l": 14.902
  },
  "oklch": {
    "l": 0.20642,
    "c": 0.08524,
    "h": 276.8
  },
  "luminance": 0.00789
}

Semantic roles & 50–950 ramp

primary

#100F3D

secondary

#767730

accent

#E444E0

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030108

muted

#78777B

Preview Lab

Preview with #100F3D

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

Preview Lab → · Contrast checker → · Palette generator →