#100D3E#100D3E

#100D3E is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 20.4% C 0.090 H 277.6°. Best body text is #FFFFFF at 18.27:1 contrast (WCAG AA passes).

Color values

HEX	#100D3E
RGB	rgb(16, 13, 62)
HSL	hsl(244, 65%, 15%)
HSV	hsv(244, 79%, 24%)
CMYK	cmyk(74.2%, 79%, 0%, 75.7%)
CIE-LAB	lab(6.74, 19.29, -30.64)
CIE-LCH	lch(6.74, 36.20, 302.19°)
OKLab	oklab(20.37% 0.0118 -0.0888)
OKLCH	oklch(20.37% 0.09 277.6)
XYZ	xyz(1.2268, 0.7457, 4.6358)
Luminance	0.0075 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100D3E #3B3E0D

analogous

#0D233E #100D3E #280D3E

triadic

#100D3E #3E100D #0D3E10

tetradic

#100D3E #3E0D23 #3B3E0D #0D3E28

square

#100D3E #3E0D23 #3B3E0D #0D3E28

split-complementary

#100D3E #3E280D #233E0D

monochromatic

#070519 #070519 #100D3E #1D1871 #2A22A3

Accessibility & contrast

On white

18.27

#100D3E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#100D3E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100D3E

18.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100D3E	#FFFFFF	#000000	##FFFFFF
##100D3E	1.00	18.27	1.15	18.27
#FFFFFF	18.27	1.00	21.00	1.00
#000000	1.15	21.00	1.00	21.00
##FFFFFF	18.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00173F

Deuteranopia (green-blind)

#00133D

Tritanopia (blue-blind)

#001A24

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #100d3e;
/* rgb */ color: rgb(16, 13, 62);
/* oklch */ color: oklch(20.4% 0.090 277.6);

Tailwind

colors: {
  custom: {
    50: '#564c74',
    500: '#100d3e',
    950: '#000000',
  },
}

SCSS

$custom: #100d3e;
$custom-light: #564c74;
$custom-dark: #000000;

JSON

{
  "hex": "#100d3e",
  "rgb": {
    "r": 16,
    "g": 13,
    "b": 62
  },
  "hsl": {
    "h": 243.673,
    "s": 65.333,
    "l": 14.706
  },
  "oklch": {
    "l": 0.20367,
    "c": 0.08956,
    "h": 277.6
  },
  "luminance": 0.00746
}

Semantic roles & 50–950 ramp

primary

#100D3E

secondary

#757A2D

accent

#E840DE

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030108

muted

#78777B

Preview Lab

Preview with #100D3E

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

Preview Lab → · Contrast checker → · Palette generator →