#100D3D#100D3D

#100D3D is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 20.3% C 0.088 H 277.8°. Best body text is #FFFFFF at 18.31:1 contrast (WCAG AA passes).

Color values

HEX	#100D3D
RGB	rgb(16, 13, 61)
HSL	hsl(244, 65%, 15%)
HSV	hsv(244, 79%, 24%)
CMYK	cmyk(73.8%, 78.7%, 0%, 76.1%)
CIE-LAB	lab(6.64, 18.84, -30.08)
CIE-LCH	lch(6.64, 35.49, 302.06°)
OKLab	oklab(20.25% 0.012 -0.0872)
OKLCH	oklch(20.25% 0.088 277.8)
XYZ	xyz(1.1996, 0.7348, 4.4926)
Luminance	0.0073 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100D3D #3A3D0D

analogous

#0D223D #100D3D #280D3D

triadic

#100D3D #3D100D #0D3D10

tetradic

#100D3D #3D0D22 #3A3D0D #0D3D28

square

#100D3D #3D0D22 #3A3D0D #0D3D28

split-complementary

#100D3D #3D280D #223D0D

monochromatic

#070519 #070519 #100D3D #1D186F #2A23A2

Accessibility & contrast

On white

18.31

#100D3D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#100D3D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100D3D

18.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100D3D	#FFFFFF	#000000	##FFFFFF
##100D3D	1.00	18.31	1.15	18.31
#FFFFFF	18.31	1.00	21.00	1.00
#000000	1.15	21.00	1.00	21.00
##FFFFFF	18.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00173E

Deuteranopia (green-blind)

#00133C

Tritanopia (blue-blind)

#001A23

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #100d3d;
/* rgb */ color: rgb(16, 13, 61);
/* oklch */ color: oklch(20.3% 0.088 277.8);

Tailwind

colors: {
  custom: {
    50: '#554c73',
    500: '#100d3d',
    950: '#000000',
  },
}

SCSS

$custom: #100d3d;
$custom-light: #554c73;
$custom-dark: #000000;

JSON

{
  "hex": "#100d3d",
  "rgb": {
    "r": 16,
    "g": 13,
    "b": 61
  },
  "hsl": {
    "h": 243.75,
    "s": 64.865,
    "l": 14.51
  },
  "oklch": {
    "l": 0.20254,
    "c": 0.08804,
    "h": 277.8
  },
  "luminance": 0.00735
}

Semantic roles & 50–950 ramp

primary

#100D3D

secondary

#74792D

accent

#E840DD

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030108

muted

#78777B

Preview Lab

Preview with #100D3D

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

Preview Lab → · Contrast checker → · Palette generator →