#100D5C#100D5C

#100D5C is a very dark, vivid blue. Relative luminance 0.012; OKLCH L 24.1% C 0.132 H 272.1°. Best body text is #FFFFFF at 17.02:1 contrast (WCAG AA passes).

Color values

HEX	#100D5C
RGB	rgb(16, 13, 92)
HSL	hsl(242, 75%, 21%)
HSV	hsv(242, 86%, 36%)
CMYK	cmyk(82.6%, 85.9%, 0%, 63.9%)
CIE-LAB	lab(10.34, 30.86, -45.51)
CIE-LCH	lch(10.34, 54.98, 304.14°)
OKLab	oklab(24.05% 0.0048 -0.1317)
OKLCH	oklch(24.05% 0.132 272.1)
XYZ	xyz(2.2887, 1.1705, 10.2284)
Luminance	0.0117 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100D5C #595C0D

analogous

#0D325C #100D5C #370D5C

triadic

#100D5C #5C100D #0D5C10

tetradic

#100D5C #5C0D32 #595C0D #0D5C37

square

#100D5C #5C0D32 #595C0D #0D5C37

split-complementary

#100D5C #5C370D #325C0D

monochromatic

#05041B #070526 #100D5C #191592 #231CC7

Accessibility & contrast

On white

17.02

#100D5C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#100D5C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100D5C

17.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100D5C	#FFFFFF	#000000	##FFFFFF
##100D5C	1.00	17.02	1.23	17.02
#FFFFFF	17.02	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00205E

Deuteranopia (green-blind)

#00185B

Tritanopia (blue-blind)

#002635

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #100d5c;
/* rgb */ color: rgb(16, 13, 92);
/* oklch */ color: oklch(24.1% 0.132 272.1);

Tailwind

colors: {
  custom: {
    50: '#5e4e8b',
    500: '#100d5c',
    950: '#000000',
  },
}

SCSS

$custom: #100d5c;
$custom-light: #5e4e8b;
$custom-dark: #000000;

JSON

{
  "hex": "#100d5c",
  "rgb": {
    "r": 16,
    "g": 13,
    "b": 92
  },
  "hsl": {
    "h": 242.278,
    "s": 75.238,
    "l": 20.588
  },
  "oklch": {
    "l": 0.24052,
    "c": 0.13179,
    "h": 272.1
  },
  "luminance": 0.01171
}

Semantic roles & 50–950 ramp

primary

#100D5C

secondary

#92962F

accent

#F236EB

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#05010C

muted

#79777D

Preview Lab

Preview with #100D5C

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

Preview Lab → · Contrast checker → · Palette generator →