#1C47A9#1C47A9

#1C47A9 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.2% C 0.165 H 263.3°. Best body text is #FFFFFF at 8.32:1 contrast (WCAG AA passes).

Color values

HEX	#1C47A9
RGB	rgb(28, 71, 169)
HSL	hsl(222, 72%, 39%)
HSV	hsv(222, 83%, 66%)
CMYK	cmyk(83.4%, 58%, 0%, 33.7%)
CIE-LAB	lab(33.17, 23.24, -56.62)
CIE-LCH	lch(33.17, 61.20, 292.31°)
OKLab	oklab(43.23% -0.0193 -0.1636)
OKLCH	oklch(43.23% 0.165 263.3)
XYZ	xyz(9.8910, 7.6167, 38.4773)
Luminance	0.0762 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C47A9 #A97E1C

analogous

#1C8DA9 #1C47A9 #371CA9

triadic

#1C47A9 #A91C47 #47A91C

tetradic

#1C47A9 #A91C8D #A97E1C #1CA937

square

#1C47A9 #A91C8D #A97E1C #1CA937

split-complementary

#1C47A9 #A9371C #8DA91C

monochromatic

#0B1B40 #133174 #1C47A9 #275EDB #5B85E4

Accessibility & contrast

On white

8.32

#1C47A9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#1C47A9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C47A9

8.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C47A9	#FFFFFF	#000000	##FFFFFF
##1C47A9	1.00	8.32	2.52	8.32
#FFFFFF	8.32	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055AC

Deuteranopia (green-blind)

#0048A7

Tritanopia (blue-blind)

#006071

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1c47a9;
/* rgb */ color: rgb(28, 71, 169);
/* oklch */ color: oklch(43.2% 0.165 263.3);

Tailwind

colors: {
  custom: {
    50: '#7279c3',
    500: '#1c47a9',
    950: '#000000',
  },
}

SCSS

$custom: #1c47a9;
$custom-light: #7279c3;
$custom-dark: #000000;

JSON

{
  "hex": "#1c47a9",
  "rgb": {
    "r": 28,
    "g": 71,
    "b": 169
  },
  "hsl": {
    "h": 221.702,
    "s": 71.574,
    "l": 38.627
  },
  "oklch": {
    "l": 0.43225,
    "c": 0.16477,
    "h": 263.3
  },
  "luminance": 0.07618
}

Semantic roles & 50–950 ramp

primary

#1C47A9

secondary

#C8A659

accent

#B739EE

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#090913

muted

#7B7B82

Preview Lab

Preview with #1C47A9

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

Preview Lab → · Contrast checker → · Palette generator →