#100F5E#100F5E

#100F5E is a very dark, vivid blue. Relative luminance 0.013; OKLCH L 24.6% C 0.133 H 271.6°. Best body text is #FFFFFF at 16.77:1 contrast (WCAG AA passes).

Color values

HEX	#100F5E
RGB	rgb(16, 15, 94)
HSL	hsl(241, 72%, 21%)
HSV	hsv(241, 84%, 37%)
CMYK	cmyk(83%, 84%, 0%, 63.1%)
CIE-LAB	lab(10.99, 30.43, -45.77)
CIE-LCH	lch(10.99, 54.96, 303.62°)
OKLab	oklab(24.58% 0.0036 -0.1325)
OKLCH	oklch(24.58% 0.133 271.6)
XYZ	xyz(2.4042, 1.2597, 10.7039)
Luminance	0.0126 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100F5E #5D5E0F

analogous

#0F365E #100F5E #380F5E

triadic

#100F5E #5E100F #0F5E10

tetradic

#100F5E #5E0F36 #5D5E0F #0F5E38

square

#100F5E #5E0F36 #5D5E0F #0F5E38

split-complementary

#100F5E #5E380F #365E0F

monochromatic

#04041A #070729 #100F5E #191793 #2220C8

Accessibility & contrast

On white

16.77

#100F5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#100F5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100F5E

16.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100F5E	#FFFFFF	#000000	##FFFFFF
##100F5E	1.00	16.77	1.25	16.77
#FFFFFF	16.77	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002160

Deuteranopia (green-blind)

#00195D

Tritanopia (blue-blind)

#002736

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #100f5e;
/* rgb */ color: rgb(16, 15, 94);
/* oklch */ color: oklch(24.6% 0.133 271.6);

Tailwind

colors: {
  custom: {
    50: '#5f4f8d',
    500: '#100f5e',
    950: '#000000',
  },
}

SCSS

$custom: #100f5e;
$custom-light: #5f4f8d;
$custom-dark: #000000;

JSON

{
  "hex": "#100f5e",
  "rgb": {
    "r": 16,
    "g": 15,
    "b": 94
  },
  "hsl": {
    "h": 240.759,
    "s": 72.477,
    "l": 21.373
  },
  "oklch": {
    "l": 0.24584,
    "c": 0.13254,
    "h": 271.6
  },
  "luminance": 0.0126
}

Semantic roles & 50–950 ramp

primary

#100F5E

secondary

#969731

accent

#EF39ED

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#05020C

muted

#7A787D

Preview Lab

Preview with #100F5E

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

Preview Lab → · Contrast checker → · Palette generator →