#1C4AAD#1C4AAD

#1C4AAD is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.2% C 0.166 H 262.8°. Best body text is #FFFFFF at 7.98:1 contrast (WCAG AA passes).

Color values

HEX	#1C4AAD
RGB	rgb(28, 74, 173)
HSL	hsl(221, 72%, 39%)
HSV	hsv(221, 84%, 68%)
CMYK	cmyk(83.8%, 57.2%, 0%, 32.2%)
CIE-LAB	lab(34.31, 22.79, -57.14)
CIE-LCH	lch(34.31, 61.52, 291.75°)
OKLab	oklab(44.19% -0.0209 -0.1651)
OKLCH	oklch(44.19% 0.166 262.8)
XYZ	xyz(10.4678, 8.1603, 40.5504)
Luminance	0.0816 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4AAD #AD7F1C

analogous

#1C92AD #1C4AAD #371CAD

triadic

#1C4AAD #AD1C4A #4AAD1C

tetradic

#1C4AAD #AD1C92 #AD7F1C #1CAD37

square

#1C4AAD #AD1C92 #AD7F1C #1CAD37

split-complementary

#1C4AAD #AD371C #92AD1C

monochromatic

#0B1D44 #133378 #1C4AAD #2A62DC #5E89E5

Accessibility & contrast

On white

7.98

#1C4AAD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#1C4AAD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4AAD

7.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4AAD	#FFFFFF	#000000	##FFFFFF
##1C4AAD	1.00	7.98	2.63	7.98
#FFFFFF	7.98	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	7.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058B0

Deuteranopia (green-blind)

#004AAB

Tritanopia (blue-blind)

#006374

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1c4aad;
/* rgb */ color: rgb(28, 74, 173);
/* oklch */ color: oklch(44.2% 0.166 262.8);

Tailwind

colors: {
  custom: {
    50: '#737bc6',
    500: '#1c4aad',
    950: '#000000',
  },
}

SCSS

$custom: #1c4aad;
$custom-light: #737bc6;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4aad",
  "rgb": {
    "r": 28,
    "g": 74,
    "b": 173
  },
  "hsl": {
    "h": 220.966,
    "s": 72.139,
    "l": 39.412
  },
  "oklch": {
    "l": 0.44186,
    "c": 0.16645,
    "h": 262.8
  },
  "luminance": 0.08162
}

Semantic roles & 50–950 ramp

primary

#1C4AAD

secondary

#C9A65C

accent

#B539EF

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #1C4AAD

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

Preview Lab → · Contrast checker → · Palette generator →