#100D37#100D37

#100D37 is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 19.6% C 0.079 H 279.5°. Best body text is #FFFFFF at 18.51:1 contrast (WCAG AA passes).

Color values

HEX	#100D37
RGB	rgb(16, 13, 55)
HSL	hsl(244, 62%, 13%)
HSV	hsv(244, 76%, 22%)
CMYK	cmyk(70.9%, 76.4%, 0%, 78.4%)
CIE-LAB	lab(6.09, 16.05, -26.63)
CIE-LCH	lch(6.09, 31.10, 301.08°)
OKLab	oklab(19.59% 0.0129 -0.0776)
OKLCH	oklch(19.59% 0.079 279.5)
XYZ	xyz(1.0470, 0.6738, 3.6886)
Luminance	0.0067 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100D37 #34370D

analogous

#0D1F37 #100D37 #250D37

triadic

#100D37 #37100D #0D3710

tetradic

#100D37 #370D1F #34370D #0D3725

square

#100D37 #370D1F #34370D #0D3725

split-complementary

#100D37 #37250D #1F370D

monochromatic

#070619 #070619 #100D37 #1E1968 #2D249A

Accessibility & contrast

On white

18.51

#100D37 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#100D37 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100D37

18.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100D37	#FFFFFF	#000000	##FFFFFF
##100D37	1.00	18.51	1.13	18.51
#FFFFFF	18.51	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001538

Deuteranopia (green-blind)

#001236

Tritanopia (blue-blind)

#001820

Achromatopsia (no color)

#131313

Design tokens & code

CSS

--color: #100d37;
/* rgb */ color: rgb(16, 13, 55);
/* oklch */ color: oklch(19.6% 0.079 279.5);

Tailwind

colors: {
  custom: {
    50: '#534c6e',
    500: '#100d37',
    950: '#000000',
  },
}

SCSS

$custom: #100d37;
$custom-light: #534c6e;
$custom-dark: #000000;

JSON

{
  "hex": "#100d37",
  "rgb": {
    "r": 16,
    "g": 13,
    "b": 55
  },
  "hsl": {
    "h": 244.286,
    "s": 61.765,
    "l": 13.333
  },
  "oklch": {
    "l": 0.19592,
    "c": 0.07865,
    "h": 279.5
  },
  "luminance": 0.00674
}

Semantic roles & 50–950 ramp

primary

#100D37

secondary

#6E722D

accent

#E543D9

background

#F5F4F6

surface

#E8E7EC

border

#C4C3C7

text

#030107

muted

#78777A

Preview Lab

Preview with #100D37

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

Preview Lab → · Contrast checker → · Palette generator →