#1C40AD#1C40AD

#1C40AD is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.2% C 0.179 H 265.1°. Best body text is #FFFFFF at 8.80:1 contrast (WCAG AA passes).

Color values

HEX	#1C40AD
RGB	rgb(28, 64, 173)
HSL	hsl(225, 72%, 39%)
HSV	hsv(225, 84%, 68%)
CMYK	cmyk(83.8%, 63%, 0%, 32.2%)
CIE-LAB	lab(31.65, 29.50, -61.50)
CIE-LCH	lch(31.65, 68.21, 295.63°)
OKLab	oklab(42.19% -0.0151 -0.1781)
OKLCH	oklch(42.19% 0.179 265.1)
XYZ	xyz(9.8524, 6.9296, 40.3453)
Luminance	0.0693 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C40AD #AD891C

analogous

#1C89AD #1C40AD #401CAD

triadic

#1C40AD #AD1C40 #40AD1C

tetradic

#1C40AD #AD1C89 #AD891C #1CAD40

square

#1C40AD #AD1C89 #AD891C #1CAD40

split-complementary

#1C40AD #AD401C #89AD1C

monochromatic

#0B1944 #132D78 #1C40AD #2A56DC #5E80E5

Accessibility & contrast

On white

8.80

#1C40AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#1C40AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C40AD

8.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C40AD	#FFFFFF	#000000	##FFFFFF
##1C40AD	1.00	8.80	2.39	8.80
#FFFFFF	8.80	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B1

Deuteranopia (green-blind)

#0044AB

Tritanopia (blue-blind)

#005D70

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1c40ad;
/* rgb */ color: rgb(28, 64, 173);
/* oklch */ color: oklch(42.2% 0.179 265.1);

Tailwind

colors: {
  custom: {
    50: '#7474c6',
    500: '#1c40ad',
    950: '#000000',
  },
}

SCSS

$custom: #1c40ad;
$custom-light: #7474c6;
$custom-dark: #000000;

JSON

{
  "hex": "#1c40ad",
  "rgb": {
    "r": 28,
    "g": 64,
    "b": 173
  },
  "hsl": {
    "h": 225.103,
    "s": 72.139,
    "l": 39.412
  },
  "oklch": {
    "l": 0.4219,
    "c": 0.1787,
    "h": 265.1
  },
  "luminance": 0.06931
}

Semantic roles & 50–950 ramp

primary

#1C40AD

secondary

#C9AE5C

accent

#C239EF

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #1C40AD

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

Preview Lab → · Contrast checker → · Palette generator →