#1D1C99#1D1C99

#1D1C99 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 34.3% C 0.191 H 270.6°. Best body text is #FFFFFF at 12.51:1 contrast (WCAG AA passes).

Color values

HEX	#1D1C99
RGB	rgb(29, 28, 153)
HSL	hsl(240, 69%, 35%)
HSV	hsv(240, 82%, 60%)
CMYK	cmyk(81%, 81.7%, 0%, 40%)
CIE-LAB	lab(21.55, 44.40, -66.03)
CIE-LCH	lch(21.55, 79.57, 303.92°)
OKLab	oklab(34.29% 0.002 -0.1912)
OKLCH	oklch(34.29% 0.191 270.6)
XYZ	xyz(6.6698, 3.3909, 30.4338)
Luminance	0.0339 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D1C99 #98991C

analogous

#1C5999 #1D1C99 #5B1C99

triadic

#1D1C99 #991D1C #1C991D

tetradic

#1D1C99 #991C59 #98991C #1C995B

square

#1D1C99 #991C59 #98991C #1C995B

split-complementary

#1D1C99 #995B1C #59991C

monochromatic

#090932 #131365 #1D1C99 #2725CD #5250DF

Accessibility & contrast

On white

12.51

#1D1C99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1D1C99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D1C99

12.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D1C99	#FFFFFF	#000000	##FFFFFF
##1D1C99	1.00	12.51	1.68	12.51
#FFFFFF	12.51	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.51	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: #1d1c99;
/* rgb */ color: rgb(29, 28, 153);
/* oklch */ color: oklch(34.3% 0.191 270.6);

Tailwind

colors: {
  custom: {
    50: '#725bb8',
    500: '#1d1c99',
    950: '#000000',
  },
}

SCSS

$custom: #1d1c99;
$custom-light: #725bb8;
$custom-dark: #000000;

JSON

{
  "hex": "#1d1c99",
  "rgb": {
    "r": 29,
    "g": 28,
    "b": 153
  },
  "hsl": {
    "h": 240.48,
    "s": 69.061,
    "l": 35.49
  },
  "oklch": {
    "l": 0.34295,
    "c": 0.19118,
    "h": 270.6
  },
  "luminance": 0.03392
}

Semantic roles & 50–950 ramp

primary

#1D1C99

secondary

#C1C24F

accent

#EC3CEA

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#090412

muted

#7B7981

Preview Lab

Preview with #1D1C99

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

Preview Lab → · Contrast checker → · Palette generator →