#1C1C99#1C1C99

#1C1C99 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 34.2% C 0.191 H 270.3°. Best body text is #FFFFFF at 12.53:1 contrast (WCAG AA passes).

Color values

HEX	#1C1C99
RGB	rgb(28, 28, 153)
HSL	hsl(240, 69%, 35%)
HSV	hsv(240, 82%, 60%)
CMYK	cmyk(81.7%, 81.7%, 0%, 40%)
CIE-LAB	lab(21.49, 44.34, -66.12)
CIE-LCH	lch(21.49, 79.61, 303.85°)
OKLab	oklab(34.24% 0.0009 -0.1914)
OKLCH	oklch(34.24% 0.191 270.3)
XYZ	xyz(6.6420, 3.3765, 30.4325)
Luminance	0.0338 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C1C99 #99991C

analogous

#1C5A99 #1C1C99 #5A1C99

triadic

#1C1C99 #991C1C #1C991C

tetradic

#1C1C99 #991C5A #99991C #1C995A

square

#1C1C99 #991C5A #99991C #1C995A

split-complementary

#1C1C99 #995A1C #5A991C

monochromatic

#090932 #131365 #1C1C99 #2525CD #5050DF

Accessibility & contrast

On white

12.53

#1C1C99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1C1C99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C1C99

12.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C1C99	#FFFFFF	#000000	##FFFFFF
##1C1C99	1.00	12.53	1.68	12.53
#FFFFFF	12.53	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A9C

Deuteranopia (green-blind)

#002D97

Tritanopia (blue-blind)

#00435B

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1c1c99;
/* rgb */ color: rgb(28, 28, 153);
/* oklch */ color: oklch(34.2% 0.191 270.3);

Tailwind

colors: {
  custom: {
    50: '#725bb8',
    500: '#1c1c99',
    950: '#000000',
  },
}

SCSS

$custom: #1c1c99;
$custom-light: #725bb8;
$custom-dark: #000000;

JSON

{
  "hex": "#1c1c99",
  "rgb": {
    "r": 28,
    "g": 28,
    "b": 153
  },
  "hsl": {
    "h": 240,
    "s": 69.061,
    "l": 35.49
  },
  "oklch": {
    "l": 0.34244,
    "c": 0.19145,
    "h": 270.3
  },
  "luminance": 0.03377
}

Semantic roles & 50–950 ramp

primary

#1C1C99

secondary

#C2C24F

accent

#EC3CEC

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#090412

muted

#7B7981

Preview Lab

Preview with #1C1C99

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

Preview Lab → · Contrast checker → · Palette generator →