#1C105D#1C105D

#1C105D is a dark, vivid blue. Relative luminance 0.014; OKLCH L 25.5% C 0.127 H 279.5°. Best body text is #FFFFFF at 16.39:1 contrast (WCAG AA passes).

Color values

HEX	#1C105D
RGB	rgb(28, 16, 93)
HSL	hsl(249, 71%, 21%)
HSV	hsv(249, 83%, 36%)
CMYK	cmyk(69.9%, 82.8%, 0%, 63.5%)
CIE-LAB	lab(12.01, 30.68, -43.39)
CIE-LCH	lch(12.01, 53.14, 305.27°)
OKLab	oklab(25.5% 0.021 -0.1253)
OKLCH	oklch(25.5% 0.127 279.5)
XYZ	xyz(2.6393, 1.4076, 10.4864)
Luminance	0.0141 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C105D #515D10

analogous

#102B5D #1C105D #43105D

triadic

#1C105D #5D1C10 #105D1C

tetradic

#1C105D #5D102B #515D10 #105D43

square

#1C105D #5D102B #515D10 #105D43

split-complementary

#1C105D #5D4310 #2B5D10

monochromatic

#08041A #0C0729 #1C105D #2C1991 #3B22C5

Accessibility & contrast

On white

16.39

#1C105D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#1C105D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C105D

16.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C105D	#FFFFFF	#000000	##FFFFFF
##1C105D	1.00	16.39	1.28	16.39
#FFFFFF	16.39	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00225F

Deuteranopia (green-blind)

#001C5C

Tritanopia (blue-blind)

#002736

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #1c105d;
/* rgb */ color: rgb(28, 16, 93);
/* oklch */ color: oklch(25.5% 0.127 279.5);

Tailwind

colors: {
  custom: {
    50: '#63508c',
    500: '#1c105d',
    950: '#000000',
  },
}

SCSS

$custom: #1c105d;
$custom-light: #63508c;
$custom-dark: #000000;

JSON

{
  "hex": "#1c105d",
  "rgb": {
    "r": 28,
    "g": 16,
    "b": 93
  },
  "hsl": {
    "h": 249.351,
    "s": 70.642,
    "l": 21.373
  },
  "oklch": {
    "l": 0.25504,
    "c": 0.12701,
    "h": 279.5
  },
  "luminance": 0.01408
}

Semantic roles & 50–950 ramp

primary

#1C105D

secondary

#879633

accent

#ED3AD2

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020C

muted

#7A787D

Preview Lab

Preview with #1C105D

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

Preview Lab → · Contrast checker → · Palette generator →