#100D48#100D48

#100D48 is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.5% C 0.104 H 275.4°. Best body text is #FFFFFF at 17.90:1 contrast (WCAG AA passes).

Color values

HEX	#100D48
RGB	rgb(16, 13, 72)
HSL	hsl(243, 69%, 17%)
HSV	hsv(243, 82%, 28%)
CMYK	cmyk(77.8%, 81.9%, 0%, 71.8%)
CIE-LAB	lab(7.82, 23.49, -35.94)
CIE-LCH	lch(7.82, 42.94, 303.17°)
OKLab	oklab(21.54% 0.0097 -0.1039)
OKLCH	oklch(21.54% 0.104 275.4)
XYZ	xyz(1.5269, 0.8657, 6.2163)
Luminance	0.0087 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100D48 #45480D

analogous

#0D2848 #100D48 #2E0D48

triadic

#100D48 #48100D #0D4810

tetradic

#100D48 #480D28 #45480D #0D482E

square

#100D48 #480D28 #45480D #0D482E

split-complementary

#100D48 #482E0D #28480D

monochromatic

#06051A #06051A #100D48 #1C167C #2720B0

Accessibility & contrast

On white

17.90

#100D48 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#100D48 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100D48

17.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100D48	#FFFFFF	#000000	##FFFFFF
##100D48	1.00	17.90	1.17	17.90
#FFFFFF	17.90	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	17.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001A4A

Deuteranopia (green-blind)

#001447

Tritanopia (blue-blind)

#001E29

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #100d48;
/* rgb */ color: rgb(16, 13, 72);
/* oklch */ color: oklch(21.5% 0.104 275.4);

Tailwind

colors: {
  custom: {
    50: '#594c7c',
    500: '#100d48',
    950: '#000000',
  },
}

SCSS

$custom: #100d48;
$custom-light: #594c7c;
$custom-dark: #000000;

JSON

{
  "hex": "#100d48",
  "rgb": {
    "r": 16,
    "g": 13,
    "b": 72
  },
  "hsl": {
    "h": 243.051,
    "s": 69.412,
    "l": 16.667
  },
  "oklch": {
    "l": 0.21542,
    "c": 0.10437,
    "h": 275.4
  },
  "luminance": 0.00866
}

Semantic roles & 50–950 ramp

primary

#100D48

secondary

#7F832D

accent

#EC3CE3

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#040109

muted

#79777B

Preview Lab

Preview with #100D48

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

Preview Lab → · Contrast checker → · Palette generator →