#1C47AD#1C47AD

#1C47AD is a dark, vivid blue. Relative luminance 0.078; OKLCH L 43.6% C 0.170 H 263.6°. Best body text is #FFFFFF at 8.22:1 contrast (WCAG AA passes).

Color values

HEX	#1C47AD
RGB	rgb(28, 71, 173)
HSL	hsl(222, 72%, 39%)
HSV	hsv(222, 84%, 68%)
CMYK	cmyk(83.8%, 59%, 0%, 32.2%)
CIE-LAB	lab(33.50, 24.81, -58.48)
CIE-LCH	lch(33.50, 63.52, 292.99°)
OKLab	oklab(43.57% -0.0191 -0.1691)
OKLCH	oklch(43.57% 0.17 263.6)
XYZ	xyz(10.2723, 7.7692, 40.4853)
Luminance	0.0777 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C47AD #AD821C

analogous

#1C90AD #1C47AD #3A1CAD

triadic

#1C47AD #AD1C47 #47AD1C

tetradic

#1C47AD #AD1C90 #AD821C #1CAD3A

square

#1C47AD #AD1C90 #AD821C #1CAD3A

split-complementary

#1C47AD #AD3A1C #90AD1C

monochromatic

#0B1C44 #133178 #1C47AD #2A5FDC #5E86E5

Accessibility & contrast

On white

8.22

#1C47AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#1C47AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C47AD

8.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C47AD	#FFFFFF	#000000	##FFFFFF
##1C47AD	1.00	8.22	2.55	8.22
#FFFFFF	8.22	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056B0

Deuteranopia (green-blind)

#0048AB

Tritanopia (blue-blind)

#006173

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1c47ad;
/* rgb */ color: rgb(28, 71, 173);
/* oklch */ color: oklch(43.6% 0.170 263.6);

Tailwind

colors: {
  custom: {
    50: '#7379c6',
    500: '#1c47ad',
    950: '#000000',
  },
}

SCSS

$custom: #1c47ad;
$custom-light: #7379c6;
$custom-dark: #000000;

JSON

{
  "hex": "#1c47ad",
  "rgb": {
    "r": 28,
    "g": 71,
    "b": 173
  },
  "hsl": {
    "h": 222.207,
    "s": 72.139,
    "l": 39.412
  },
  "oklch": {
    "l": 0.43571,
    "c": 0.17016,
    "h": 263.6
  },
  "luminance": 0.0777
}

Semantic roles & 50–950 ramp

primary

#1C47AD

secondary

#C9A95C

accent

#B939EF

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #1C47AD

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

Preview Lab → · Contrast checker → · Palette generator →