#100F5F#100F5F

#100F5F is a very dark, vivid blue. Relative luminance 0.013; OKLCH L 24.7% C 0.134 H 271.4°. Best body text is #FFFFFF at 16.73:1 contrast (WCAG AA passes).

Color values

HEX	#100F5F
RGB	rgb(16, 15, 95)
HSL	hsl(241, 73%, 22%)
HSV	hsv(241, 84%, 37%)
CMYK	cmyk(83.2%, 84.2%, 0%, 62.7%)
CIE-LAB	lab(11.12, 30.79, -46.23)
CIE-LCH	lch(11.12, 55.54, 303.67°)
OKLab	oklab(24.71% 0.0034 -0.1338)
OKLCH	oklch(24.71% 0.134 271.4)
XYZ	xyz(2.4494, 1.2778, 10.9418)
Luminance	0.0128 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100F5F #5E5F0F

analogous

#0F365F #100F5F #380F5F

triadic

#100F5F #5F100F #0F5F10

tetradic

#100F5F #5F0F36 #5E5F0F #0F5F38

square

#100F5F #5F0F36 #5E5F0F #0F5F38

split-complementary

#100F5F #5F380F #365F0F

monochromatic

#04041A #07072A #100F5F #191794 #2220C9

Accessibility & contrast

On white

16.73

#100F5F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#100F5F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100F5F

16.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100F5F	#FFFFFF	#000000	##FFFFFF
##100F5F	1.00	16.73	1.26	16.73
#FFFFFF	16.73	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002261

Deuteranopia (green-blind)

#001A5E

Tritanopia (blue-blind)

#002837

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #100f5f;
/* rgb */ color: rgb(16, 15, 95);
/* oklch */ color: oklch(24.7% 0.134 271.4);

Tailwind

colors: {
  custom: {
    50: '#5f4f8d',
    500: '#100f5f',
    950: '#000000',
  },
}

SCSS

$custom: #100f5f;
$custom-light: #5f4f8d;
$custom-dark: #000000;

JSON

{
  "hex": "#100f5f",
  "rgb": {
    "r": 16,
    "g": 15,
    "b": 95
  },
  "hsl": {
    "h": 240.75,
    "s": 72.727,
    "l": 21.569
  },
  "oklch": {
    "l": 0.24711,
    "c": 0.13386,
    "h": 271.4
  },
  "luminance": 0.01278
}

Semantic roles & 50–950 ramp

primary

#100F5F

secondary

#979832

accent

#EF38ED

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#05020C

muted

#7A787D

Preview Lab

Preview with #100F5F

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

Preview Lab → · Contrast checker → · Palette generator →