#1C1787#1C1787

#1C1787 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.5% C 0.174 H 272.1°. Best body text is #FFFFFF at 13.80:1 contrast (WCAG AA passes).

Color values

HEX	#1C1787
RGB	rgb(28, 23, 135)
HSL	hsl(243, 71%, 31%)
HSV	hsv(243, 83%, 53%)
CMYK	cmyk(79.3%, 83%, 0%, 47.1%)
CIE-LAB	lab(18.40, 41.00, -60.05)
CIE-LCH	lch(18.40, 72.72, 304.32°)
OKLab	oklab(31.45% 0.0064 -0.1738)
OKLCH	oklch(31.45% 0.174 272.1)
XYZ	xyz(5.1570, 2.6084, 23.1487)
Luminance	0.0261 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C1787 #828717

analogous

#174A87 #1C1787 #541787

triadic

#1C1787 #871C17 #17871C

tetradic

#1C1787 #87174A #828717 #178754

square

#1C1787 #87174A #828717 #178754

split-complementary

#1C1787 #875417 #4A8717

monochromatic

#06051E #110E53 #1C1787 #2720BB #423BDE

Accessibility & contrast

On white

13.80

#1C1787 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#1C1787 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C1787

13.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C1787	#FFFFFF	#000000	##FFFFFF
##1C1787	1.00	13.80	1.52	13.80
#FFFFFF	13.80	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00328A

Deuteranopia (green-blind)

#002785

Tritanopia (blue-blind)

#003A50

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1c1787;
/* rgb */ color: rgb(28, 23, 135);
/* oklch */ color: oklch(31.5% 0.174 272.1);

Tailwind

colors: {
  custom: {
    50: '#6d57ab',
    500: '#1c1787',
    950: '#000000',
  },
}

SCSS

$custom: #1c1787;
$custom-light: #6d57ab;
$custom-dark: #000000;

JSON

{
  "hex": "#1c1787",
  "rgb": {
    "r": 28,
    "g": 23,
    "b": 135
  },
  "hsl": {
    "h": 242.679,
    "s": 70.886,
    "l": 30.98
  },
  "oklch": {
    "l": 0.31453,
    "c": 0.17391,
    "h": 272.1
  },
  "luminance": 0.02609
}

Semantic roles & 50–950 ramp

primary

#1C1787

secondary

#B5BB3F

accent

#EE3AE6

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #1C1787

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

Preview Lab → · Contrast checker → · Palette generator →