#1C187D#1C187D

#1C187D is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.4% C 0.161 H 273.0°. Best body text is #FFFFFF at 14.23:1 contrast (WCAG AA passes).

Color values

HEX	#1C187D
RGB	rgb(28, 24, 125)
HSL	hsl(242, 68%, 29%)
HSV	hsv(242, 81%, 49%)
CMYK	cmyk(77.6%, 80.8%, 0%, 51%)
CIE-LAB	lab(17.37, 37.13, -55.43)
CIE-LCH	lch(17.37, 66.72, 303.82°)
OKLab	oklab(30.38% 0.0084 -0.1604)
OKLCH	oklch(30.38% 0.161 273)
XYZ	xyz(4.5060, 2.3803, 19.6200)
Luminance	0.0238 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C187D #797D18

analogous

#18477D #1C187D #4F187D

triadic

#1C187D #7D1C18 #187D1C

tetradic

#1C187D #7D1847 #797D18 #187D4F

square

#1C187D #7D1847 #797D18 #187D4F

split-complementary

#1C187D #7D4F18 #477D18

monochromatic

#06051A #100E4A #1C187D #2822B0 #3D37D9

Accessibility & contrast

On white

14.23

#1C187D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.48

#1C187D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C187D

14.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C187D	#FFFFFF	#000000	##FFFFFF
##1C187D	1.00	14.23	1.48	14.23
#FFFFFF	14.23	1.00	21.00	1.00
#000000	1.48	21.00	1.00	21.00
##FFFFFF	14.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F80

Deuteranopia (green-blind)

#00267B

Tritanopia (blue-blind)

#00374A

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #1c187d;
/* rgb */ color: rgb(28, 24, 125);
/* oklch */ color: oklch(30.4% 0.161 273.0);

Tailwind

colors: {
  custom: {
    50: '#6b57a4',
    500: '#1c187d',
    950: '#000000',
  },
}

SCSS

$custom: #1c187d;
$custom-light: #6b57a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1c187d",
  "rgb": {
    "r": 28,
    "g": 24,
    "b": 125
  },
  "hsl": {
    "h": 242.376,
    "s": 67.785,
    "l": 29.216
  },
  "oklch": {
    "l": 0.30378,
    "c": 0.16062,
    "h": 273
  },
  "luminance": 0.02381
}

Semantic roles & 50–950 ramp

primary

#1C187D

secondary

#ADB23F

accent

#EB3DE4

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08030F

muted

#7A787F

Preview Lab

Preview with #1C187D

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

Preview Lab → · Contrast checker → · Palette generator →