#1C1579#1C1579

#1C1579 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.5% C 0.158 H 273.8°. Best body text is #FFFFFF at 14.66:1 contrast (WCAG AA passes).

Color values

HEX	#1C1579
RGB	rgb(28, 21, 121)
HSL	hsl(244, 70%, 28%)
HSV	hsv(244, 83%, 47%)
CMYK	cmyk(76.9%, 82.6%, 0%, 52.5%)
CIE-LAB	lab(16.32, 37.41, -54.61)
CIE-LCH	lch(16.32, 66.19, 304.41°)
OKLab	oklab(29.51% 0.0106 -0.158)
OKLCH	oklch(29.51% 0.158 273.8)
XYZ	xyz(4.1971, 2.1633, 18.2818)
Luminance	0.0216 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C1579 #727915

analogous

#154079 #1C1579 #4E1579

triadic

#1C1579 #791C15 #15791C

tetradic

#1C1579 #791540 #727915 #15794E

square

#1C1579 #791540 #727915 #15794E

split-complementary

#1C1579 #794E15 #407915

monochromatic

#06051A #100C45 #1C1579 #281EAD #3A2EDB

Accessibility & contrast

On white

14.66

#1C1579 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#1C1579 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C1579

14.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C1579	#FFFFFF	#000000	##FFFFFF
##1C1579	1.00	14.66	1.43	14.66
#FFFFFF	14.66	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D7C

Deuteranopia (green-blind)

#002477

Tritanopia (blue-blind)

#003447

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #1c1579;
/* rgb */ color: rgb(28, 21, 121);
/* oklch */ color: oklch(29.5% 0.158 273.8);

Tailwind

colors: {
  custom: {
    50: '#6a55a1',
    500: '#1c1579',
    950: '#000000',
  },
}

SCSS

$custom: #1c1579;
$custom-light: #6a55a1;
$custom-dark: #000000;

JSON

{
  "hex": "#1c1579",
  "rgb": {
    "r": 28,
    "g": 21,
    "b": 121
  },
  "hsl": {
    "h": 244.2,
    "s": 70.423,
    "l": 27.843
  },
  "oklch": {
    "l": 0.29505,
    "c": 0.15833,
    "h": 273.8
  },
  "luminance": 0.02164
}

Semantic roles & 50–950 ramp

primary

#1C1579

secondary

#A6AF3B

accent

#ED3BE1

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#08030F

muted

#7A787F

Preview Lab

Preview with #1C1579

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

Preview Lab → · Contrast checker → · Palette generator →