#1D18B3#1D18B3

#1D18B3 is a dark, highly saturated blue. Relative luminance 0.042; OKLCH L 37.1% C 0.224 H 269.2°. Best body text is #FFFFFF at 11.45:1 contrast (WCAG AA passes).

Color values

HEX	#1D18B3
RGB	rgb(29, 24, 179)
HSL	hsl(242, 76%, 40%)
HSV	hsv(242, 87%, 70%)
CMYK	cmyk(83.8%, 86.6%, 0%, 29.8%)
CIE-LAB	lab(24.22, 54.26, -77.36)
CIE-LCH	lch(24.22, 94.49, 305.05°)
OKLab	oklab(37.08% -0.003 -0.2238)
OKLCH	oklch(37.08% 0.224 269.2)
XYZ	xyz(8.9672, 4.1681, 42.9710)
Luminance	0.0417 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D18B3 #AEB318

analogous

#1861B3 #1D18B3 #6A18B3

triadic

#1D18B3 #B31D18 #18B31D

tetradic

#1D18B3 #B31861 #AEB318 #18B36A

square

#1D18B3 #B31861 #AEB318 #18B36A

split-complementary

#1D18B3 #B36A18 #61B318

monochromatic

#0C0A47 #14117D #1D18B3 #2C26E2 #615CE9

Accessibility & contrast

On white

11.45

#1D18B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#1D18B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D18B3

11.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D18B3	#FFFFFF	#000000	##FFFFFF
##1D18B3	1.00	11.45	1.83	11.45
#FFFFFF	11.45	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0041B7

Deuteranopia (green-blind)

#0031B1

Tritanopia (blue-blind)

#004D6A

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1d18b3;
/* rgb */ color: rgb(29, 24, 179);
/* oklch */ color: oklch(37.1% 0.224 269.2);

Tailwind

colors: {
  custom: {
    50: '#795ccb',
    500: '#1d18b3',
    950: '#000000',
  },
}

SCSS

$custom: #1d18b3;
$custom-light: #795ccb;
$custom-dark: #000000;

JSON

{
  "hex": "#1d18b3",
  "rgb": {
    "r": 29,
    "g": 24,
    "b": 179
  },
  "hsl": {
    "h": 241.935,
    "s": 76.355,
    "l": 39.804
  },
  "oklch": {
    "l": 0.37076,
    "c": 0.22385,
    "h": 269.2
  },
  "luminance": 0.04169
}

Semantic roles & 50–950 ramp

primary

#1D18B3

secondary

#C9CD5A

accent

#F335ED

background

#F8F5FC

surface

#EFE9F9

border

#CAC5D2

text

#0B0414

muted

#7C7982

Preview Lab

Preview with #1D18B3

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

Preview Lab → · Contrast checker → · Palette generator →