#1C1773#1C1773

#1C1773 is a dark, vivid blue. Relative luminance 0.021; OKLCH L 29.1% C 0.149 H 274.3°. Best body text is #FFFFFF at 14.79:1 contrast (WCAG AA passes).

Color values

HEX	#1C1773
RGB	rgb(28, 23, 115)
HSL	hsl(243, 67%, 27%)
HSV	hsv(243, 80%, 45%)
CMYK	cmyk(75.7%, 80%, 0%, 54.9%)
CIE-LAB	lab(15.99, 34.26, -51.30)
CIE-LCH	lch(15.99, 61.68, 303.74°)
OKLab	oklab(29.06% 0.0112 -0.1484)
OKLCH	oklch(29.06% 0.149 274.3)
XYZ	xyz(3.8788, 2.0971, 16.4167)
Luminance	0.0210 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C1773 #6E7317

analogous

#174073 #1C1773 #4A1773

triadic

#1C1773 #731C17 #17731C

tetradic

#1C1773 #731740 #6E7317 #17734A

square

#1C1773 #731740 #6E7317 #17734A

split-complementary

#1C1773 #734A17 #407317

monochromatic

#06051A #100D40 #1C1773 #2821A6 #382FD5

Accessibility & contrast

On white

14.79

#1C1773 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#1C1773 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C1773

14.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C1773	#FFFFFF	#000000	##FFFFFF
##1C1773	1.00	14.79	1.42	14.79
#FFFFFF	14.79	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C76

Deuteranopia (green-blind)

#002371

Tritanopia (blue-blind)

#003244

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #1c1773;
/* rgb */ color: rgb(28, 23, 115);
/* oklch */ color: oklch(29.1% 0.149 274.3);

Tailwind

colors: {
  custom: {
    50: '#68569c',
    500: '#1c1773',
    950: '#000000',
  },
}

SCSS

$custom: #1c1773;
$custom-light: #68569c;
$custom-dark: #000000;

JSON

{
  "hex": "#1c1773",
  "rgb": {
    "r": 28,
    "g": 23,
    "b": 115
  },
  "hsl": {
    "h": 243.261,
    "s": 66.667,
    "l": 27.059
  },
  "oklch": {
    "l": 0.29062,
    "c": 0.1488,
    "h": 274.3
  },
  "luminance": 0.02097
}

Semantic roles & 50–950 ramp

primary

#1C1773

secondary

#A3A93D

accent

#EA3EE0

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1C1773

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

Preview Lab → · Contrast checker → · Palette generator →