#100F55#100F55

#100F55 is a very dark, vivid blue. Relative luminance 0.011; OKLCH L 23.5% C 0.120 H 272.7°. Best body text is #FFFFFF at 17.19:1 contrast (WCAG AA passes).

Color values

HEX	#100F55
RGB	rgb(16, 15, 85)
HSL	hsl(241, 70%, 20%)
HSV	hsv(241, 82%, 33%)
CMYK	cmyk(81.2%, 82.4%, 0%, 66.7%)
CIE-LAB	lab(9.86, 27.13, -41.56)
CIE-LCH	lch(9.86, 49.63, 303.14°)
OKLab	oklab(23.45% 0.0057 -0.1203)
OKLCH	oklch(23.45% 0.12 272.7)
XYZ	xyz(2.0237, 1.1075, 8.6997)
Luminance	0.0111 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100F55 #54550F

analogous

#0F3155 #100F55 #330F55

triadic

#100F55 #55100F #0F5510

tetradic

#100F55 #550F31 #54550F #0F5533

square

#100F55 #550F31 #54550F #0F5533

split-complementary

#100F55 #55330F #31550F

monochromatic

#05051A #060621 #100F55 #1A1889 #2421BD

Accessibility & contrast

On white

17.19

#100F55 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#100F55 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100F55

17.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100F55	#FFFFFF	#000000	##FFFFFF
##100F55	1.00	17.19	1.22	17.19
#FFFFFF	17.19	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001F57

Deuteranopia (green-blind)

#001854

Tritanopia (blue-blind)

#002431

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #100f55;
/* rgb */ color: rgb(16, 15, 85);
/* oklch */ color: oklch(23.5% 0.120 272.7);

Tailwind

colors: {
  custom: {
    50: '#5c4e86',
    500: '#100f55',
    950: '#000000',
  },
}

SCSS

$custom: #100f55;
$custom-light: #5c4e86;
$custom-dark: #000000;

JSON

{
  "hex": "#100f55",
  "rgb": {
    "r": 16,
    "g": 15,
    "b": 85
  },
  "hsl": {
    "h": 240.857,
    "s": 70,
    "l": 19.608
  },
  "oklch": {
    "l": 0.23454,
    "c": 0.12041,
    "h": 272.7
  },
  "luminance": 0.01108
}

Semantic roles & 50–950 ramp

primary

#100F55

secondary

#8E8F31

accent

#ED3BEA

background

#F5F4F8

surface

#E9E7EF

border

#C5C3CA

text

#05020B

muted

#79787C

Preview Lab

Preview with #100F55

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

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