#1C1789#1C1789

#1C1789 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.7% C 0.176 H 271.9°. Best body text is #FFFFFF at 13.70:1 contrast (WCAG AA passes).

Color values

HEX	#1C1789
RGB	rgb(28, 23, 137)
HSL	hsl(243, 71%, 31%)
HSV	hsv(243, 83%, 54%)
CMYK	cmyk(79.6%, 83.2%, 0%, 46.3%)
CIE-LAB	lab(18.65, 41.66, -60.90)
CIE-LCH	lch(18.65, 73.78, 304.37°)
OKLab	oklab(31.7% 0.0059 -0.1762)
OKLCH	oklch(31.7% 0.176 271.9)
XYZ	xyz(5.2991, 2.6652, 23.8972)
Luminance	0.0267 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C1789 #848917

analogous

#174B89 #1C1789 #551789

triadic

#1C1789 #891C17 #17891C

tetradic

#1C1789 #89174B #848917 #178955

square

#1C1789 #89174B #848917 #178955

split-complementary

#1C1789 #895517 #4B8917

monochromatic

#070520 #110E55 #1C1789 #2720BD #433CDE

Accessibility & contrast

On white

13.70

#1C1789 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#1C1789 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C1789

13.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C1789	#FFFFFF	#000000	##FFFFFF
##1C1789	1.00	13.70	1.53	13.70
#FFFFFF	13.70	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00338C

Deuteranopia (green-blind)

#002887

Tritanopia (blue-blind)

#003B51

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1c1789;
/* rgb */ color: rgb(28, 23, 137);
/* oklch */ color: oklch(31.7% 0.176 271.9);

Tailwind

colors: {
  custom: {
    50: '#6e57ad',
    500: '#1c1789',
    950: '#000000',
  },
}

SCSS

$custom: #1c1789;
$custom-light: #6e57ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1c1789",
  "rgb": {
    "r": 28,
    "g": 23,
    "b": 137
  },
  "hsl": {
    "h": 242.632,
    "s": 71.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.31697,
    "c": 0.17634,
    "h": 271.9
  },
  "luminance": 0.02666
}

Semantic roles & 50–950 ramp

primary

#1C1789

secondary

#B7BD3F

accent

#EE3AE6

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090310

muted

#7B787F

Preview Lab

Preview with #1C1789

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

Preview Lab → · Contrast checker → · Palette generator →