#100D40#100D40

#100D40 is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 20.6% C 0.093 H 277.1°. Best body text is #FFFFFF at 18.20:1 contrast (WCAG AA passes).

Color values

HEX	#100D40
RGB	rgb(16, 13, 64)
HSL	hsl(244, 66%, 15%)
HSV	hsv(244, 80%, 25%)
CMYK	cmyk(75%, 79.7%, 0%, 74.9%)
CIE-LAB	lab(6.94, 20.17, -31.74)
CIE-LCH	lch(6.94, 37.60, 302.44°)
OKLab	oklab(20.6% 0.0115 -0.0919)
OKLCH	oklch(20.6% 0.093 277.1)
XYZ	xyz(1.2827, 0.7681, 4.9301)
Luminance	0.0077 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Navy Blue (survey)

#001146

ΔE00 3.09

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100D40 #3D400D

analogous

#0D2440 #100D40 #290D40

triadic

#100D40 #40100D #0D4010

tetradic

#100D40 #400D24 #3D400D #0D4029

square

#100D40 #400D24 #3D400D #0D4029

split-complementary

#100D40 #40290D #24400D

monochromatic

#060519 #060519 #100D40 #1D1773 #2922A6

Accessibility & contrast

On white

18.20

#100D40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#100D40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100D40

18.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100D40	#FFFFFF	#000000	##FFFFFF
##100D40	1.00	18.20	1.15	18.20
#FFFFFF	18.20	1.00	21.00	1.00
#000000	1.15	21.00	1.00	21.00
##FFFFFF	18.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001742

Deuteranopia (green-blind)

#00133F

Tritanopia (blue-blind)

#001B25

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #100d40;
/* rgb */ color: rgb(16, 13, 64);
/* oklch */ color: oklch(20.6% 0.093 277.1);

Tailwind

colors: {
  custom: {
    50: '#564c75',
    500: '#100d40',
    950: '#000000',
  },
}

SCSS

$custom: #100d40;
$custom-light: #564c75;
$custom-dark: #000000;

JSON

{
  "hex": "#100d40",
  "rgb": {
    "r": 16,
    "g": 13,
    "b": 64
  },
  "hsl": {
    "h": 243.529,
    "s": 66.234,
    "l": 15.098
  },
  "oklch": {
    "l": 0.20597,
    "c": 0.0926,
    "h": 277.1
  },
  "luminance": 0.00768
}

Semantic roles & 50–950 ramp

primary

#100D40

secondary

#777C2D

accent

#E93FDF

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030108

muted

#78777B

Preview Lab

Preview with #100D40

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

Preview Lab → · Contrast checker → · Palette generator →