#100D45#100D45

#100D45 is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 21.2% C 0.100 H 276.0°. Best body text is #FFFFFF at 18.02:1 contrast (WCAG AA passes).

Color values

HEX	#100D45
RGB	rgb(16, 13, 69)
HSL	hsl(243, 68%, 16%)
HSV	hsv(243, 81%, 27%)
CMYK	cmyk(76.8%, 81.2%, 0%, 72.9%)
CIE-LAB	lab(7.47, 22.29, -34.40)
CIE-LCH	lch(7.47, 40.99, 302.94°)
OKLab	oklab(21.18% 0.0104 -0.0995)
OKLCH	oklch(21.18% 0.1 276)
XYZ	xyz(1.4314, 0.8275, 5.7134)
Luminance	0.0083 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100D45 #42450D

analogous

#0D2645 #100D45 #2C0D45

triadic

#100D45 #45100D #0D4510

tetradic

#100D45 #450D26 #42450D #0D452C

square

#100D45 #450D26 #42450D #0D452C

split-complementary

#100D45 #452C0D #26450D

monochromatic

#06051A #06051A #100D45 #1C1778 #2820AC

Accessibility & contrast

On white

18.02

#100D45 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#100D45 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100D45

18.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100D45	#FFFFFF	#000000	##FFFFFF
##100D45	1.00	18.02	1.17	18.02
#FFFFFF	18.02	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	18.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001947

Deuteranopia (green-blind)

#001444

Tritanopia (blue-blind)

#001D28

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #100d45;
/* rgb */ color: rgb(16, 13, 69);
/* oklch */ color: oklch(21.2% 0.100 276.0);

Tailwind

colors: {
  custom: {
    50: '#584c79',
    500: '#100d45',
    950: '#000000',
  },
}

SCSS

$custom: #100d45;
$custom-light: #584c79;
$custom-dark: #000000;

JSON

{
  "hex": "#100d45",
  "rgb": {
    "r": 16,
    "g": 13,
    "b": 69
  },
  "hsl": {
    "h": 243.214,
    "s": 68.293,
    "l": 16.078
  },
  "oklch": {
    "l": 0.21182,
    "c": 0.10001,
    "h": 276
  },
  "luminance": 0.00828
}

Semantic roles & 50–950 ramp

primary

#100D45

secondary

#7C802D

accent

#EB3DE2

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#040109

muted

#79777B

Preview Lab

Preview with #100D45

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

Preview Lab → · Contrast checker → · Palette generator →