#100F3E#100F3E

#100F3E is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 20.8% C 0.087 H 276.6°. Best body text is #FFFFFF at 18.10:1 contrast (WCAG AA passes).

Color values

HEX	#100F3E
RGB	rgb(16, 15, 62)
HSL	hsl(241, 61%, 15%)
HSV	hsv(241, 76%, 24%)
CMYK	cmyk(74.2%, 75.8%, 0%, 75.7%)
CIE-LAB	lab(7.22, 18.04, -29.84)
CIE-LCH	lch(7.22, 34.87, 301.16°)
OKLab	oklab(20.75% 0.01 -0.0862)
OKLCH	oklch(20.75% 0.087 276.6)
XYZ	xyz(1.2537, 0.7995, 4.6447)
Luminance	0.0080 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Navy Blue (survey)

#001146

ΔE00 3.08

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100F3E #3D3E0F

analogous

#0F253E #100F3E #280F3E

triadic

#100F3E #3E100F #0F3E10

tetradic

#100F3E #3E0F25 #3D3E0F #0F3E28

square

#100F3E #3E0F25 #3D3E0F #0F3E28

split-complementary

#100F3E #3E280F #253E0F

monochromatic

#060619 #060619 #100F3E #1D1B6F #2927A1

Accessibility & contrast

On white

18.10

#100F3E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.16

#100F3E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100F3E

18.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100F3E	#FFFFFF	#000000	##FFFFFF
##100F3E	1.00	18.10	1.16	18.10
#FFFFFF	18.10	1.00	21.00	1.00
#000000	1.16	21.00	1.00	21.00
##FFFFFF	18.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00183F

Deuteranopia (green-blind)

#00143D

Tritanopia (blue-blind)

#001B24

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #100f3e;
/* rgb */ color: rgb(16, 15, 62);
/* oklch */ color: oklch(20.8% 0.087 276.6);

Tailwind

colors: {
  custom: {
    50: '#554d74',
    500: '#100f3e',
    950: '#000000',
  },
}

SCSS

$custom: #100f3e;
$custom-light: #554d74;
$custom-dark: #000000;

JSON

{
  "hex": "#100f3e",
  "rgb": {
    "r": 16,
    "g": 15,
    "b": 62
  },
  "hsl": {
    "h": 241.277,
    "s": 61.039,
    "l": 15.098
  },
  "oklch": {
    "l": 0.20752,
    "c": 0.08681,
    "h": 276.6
  },
  "luminance": 0.008
}

Semantic roles & 50–950 ramp

primary

#100F3E

secondary

#777830

accent

#E444E1

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030108

muted

#78777B

Preview Lab

Preview with #100F3E

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

Preview Lab → · Contrast checker → · Palette generator →