#1C47B4#1C47B4

#1C47B4 is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.2% C 0.179 H 264.0°. Best body text is #FFFFFF at 8.05:1 contrast (WCAG AA passes).

Color values

HEX	#1C47B4
RGB	rgb(28, 71, 180)
HSL	hsl(223, 73%, 41%)
HSV	hsv(223, 84%, 71%)
CMYK	cmyk(84.4%, 60.6%, 0%, 29.4%)
CIE-LAB	lab(34.08, 27.55, -61.68)
CIE-LCH	lch(34.08, 67.56, 294.07°)
OKLab	oklab(44.19% -0.0188 -0.1785)
OKLCH	oklch(44.19% 0.179 264)
XYZ	xyz(10.9674, 8.0473, 44.1464)
Luminance	0.0805 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C47B4 #B4891C

analogous

#1C93B4 #1C47B4 #3D1CB4

triadic

#1C47B4 #B41C47 #47B41C

tetradic

#1C47B4 #B41C93 #B4891C #1CB43D

square

#1C47B4 #B41C93 #B4891C #1CB43D

split-complementary

#1C47B4 #B43D1C #93B41C

monochromatic

#0C1D4A #14327F #1C47B4 #2F60DF #6489E7

Accessibility & contrast

On white

8.05

#1C47B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#1C47B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C47B4

8.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C47B4	#FFFFFF	#000000	##FFFFFF
##1C47B4	1.00	8.05	2.61	8.05
#FFFFFF	8.05	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057B8

Deuteranopia (green-blind)

#0049B2

Tritanopia (blue-blind)

#006376

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1c47b4;
/* rgb */ color: rgb(28, 71, 180);
/* oklch */ color: oklch(44.2% 0.179 264.0);

Tailwind

colors: {
  custom: {
    50: '#7579cb',
    500: '#1c47b4',
    950: '#000000',
  },
}

SCSS

$custom: #1c47b4;
$custom-light: #7579cb;
$custom-dark: #000000;

JSON

{
  "hex": "#1c47b4",
  "rgb": {
    "r": 28,
    "g": 71,
    "b": 180
  },
  "hsl": {
    "h": 223.026,
    "s": 73.077,
    "l": 40.784
  },
  "oklch": {
    "l": 0.44189,
    "c": 0.17948,
    "h": 264
  },
  "luminance": 0.08049
}

Semantic roles & 50–950 ramp

primary

#1C47B4

secondary

#CCAD60

accent

#BC38F0

background

#F7F7FC

surface

#EEEDF9

border

#C9C8D2

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #1C47B4

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

Preview Lab → · Contrast checker → · Palette generator →