#1D18C9#1D18C9

#1D18C9 is a dark, highly saturated blue. Relative luminance 0.051; OKLCH L 39.9% C 0.248 H 268.2°. Best body text is #FFFFFF at 10.36:1 contrast (WCAG AA passes).

Color values

HEX	#1D18C9
RGB	rgb(29, 24, 201)
HSL	hsl(242, 79%, 44%)
HSV	hsv(242, 88%, 79%)
CMYK	cmyk(85.6%, 88.1%, 0%, 21.2%)
CIE-LAB	lab(27.10, 60.60, -85.58)
CIE-LCH	lch(27.10, 104.86, 305.30°)
OKLab	oklab(39.85% -0.0077 -0.2476)
OKLCH	oklch(39.85% 0.248 268.2)
XYZ	xyz(11.3723, 5.1301, 55.6378)
Luminance	0.0513 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D18C9 #C4C918

analogous

#186CC9 #1D18C9 #7618C9

triadic

#1D18C9 #C91D18 #18C91D

tetradic

#1D18C9 #C9186C #C4C918 #18C976

square

#1D18C9 #C9186C #C4C918 #18C976

split-complementary

#1D18C9 #C97618 #6CC918

monochromatic

#0D0B5C #151192 #1D18C9 #3C37E7 #716EEE

Accessibility & contrast

On white

10.36

#1D18C9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#1D18C9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D18C9

10.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D18C9	#FFFFFF	#000000	##FFFFFF
##1D18C9	1.00	10.36	2.03	10.36
#FFFFFF	10.36	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049CE

Deuteranopia (green-blind)

#0036C6

Tritanopia (blue-blind)

#005677

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1d18c9;
/* rgb */ color: rgb(29, 24, 201);
/* oklch */ color: oklch(39.9% 0.248 268.2);

Tailwind

colors: {
  custom: {
    50: '#7f5edb',
    500: '#1d18c9',
    950: '#000000',
  },
}

SCSS

$custom: #1d18c9;
$custom-light: #7f5edb;
$custom-dark: #000000;

JSON

{
  "hex": "#1d18c9",
  "rgb": {
    "r": 29,
    "g": 24,
    "b": 201
  },
  "hsl": {
    "h": 241.695,
    "s": 78.667,
    "l": 44.118
  },
  "oklch": {
    "l": 0.39852,
    "c": 0.24769,
    "h": 268.2
  },
  "luminance": 0.05132
}

Semantic roles & 50–950 ramp

primary

#1D18C9

secondary

#D1D469

accent

#F533F0

background

#F8F5FD

surface

#F0E9FB

border

#CBC5D4

text

#0D0515

muted

#7D7983

Preview Lab

Preview with #1D18C9

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

Preview Lab → · Contrast checker → · Palette generator →