#100F48#100F48

#100F48 is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.9% C 0.102 H 274.7°. Best body text is #FFFFFF at 17.74:1 contrast (WCAG AA passes).

Color values

HEX	#100F48
RGB	rgb(16, 15, 72)
HSL	hsl(241, 66%, 17%)
HSV	hsv(241, 79%, 28%)
CMYK	cmyk(77.8%, 79.2%, 0%, 71.8%)
CIE-LAB	lab(8.30, 22.15, -35.15)
CIE-LCH	lch(8.30, 41.54, 302.22°)
OKLab	oklab(21.89% 0.0084 -0.1016)
OKLCH	oklch(21.89% 0.102 274.7)
XYZ	xyz(1.5538, 0.9195, 6.2252)
Luminance	0.0092 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100F48 #47480F

analogous

#0F2B48 #100F48 #2D0F48

triadic

#100F48 #48100F #0F4810

tetradic

#100F48 #480F2B #47480F #0F482D

square

#100F48 #480F2B #47480F #0F482D

split-complementary

#100F48 #482D0F #2B480F

monochromatic

#060519 #060519 #100F48 #1B1A7B #2724AD

Accessibility & contrast

On white

17.74

#100F48 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#100F48 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100F48

17.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100F48	#FFFFFF	#000000	##FFFFFF
##100F48	1.00	17.74	1.18	17.74
#FFFFFF	17.74	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001B4A

Deuteranopia (green-blind)

#001547

Tritanopia (blue-blind)

#001F2A

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #100f48;
/* rgb */ color: rgb(16, 15, 72);
/* oklch */ color: oklch(21.9% 0.102 274.7);

Tailwind

colors: {
  custom: {
    50: '#584d7c',
    500: '#100f48',
    950: '#000000',
  },
}

SCSS

$custom: #100f48;
$custom-light: #584d7c;
$custom-dark: #000000;

JSON

{
  "hex": "#100f48",
  "rgb": {
    "r": 16,
    "g": 15,
    "b": 72
  },
  "hsl": {
    "h": 241.053,
    "s": 65.517,
    "l": 17.059
  },
  "oklch": {
    "l": 0.21886,
    "c": 0.10195,
    "h": 274.7
  },
  "luminance": 0.0092
}

Semantic roles & 50–950 ramp

primary

#100F48

secondary

#818230

accent

#E83FE6

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#040109

muted

#79777B

Preview Lab

Preview with #100F48

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

Preview Lab → · Contrast checker → · Palette generator →