#1B47A7#1B47A7

#1B47A7 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.0% C 0.162 H 262.9°. Best body text is #FFFFFF at 8.38:1 contrast (WCAG AA passes).

Color values

HEX	#1B47A7
RGB	rgb(27, 71, 167)
HSL	hsl(221, 72%, 38%)
HSV	hsv(221, 84%, 65%)
CMYK	cmyk(83.8%, 57.5%, 0%, 34.5%)
CIE-LAB	lab(32.98, 22.36, -55.74)
CIE-LCH	lch(32.98, 60.05, 291.86°)
OKLab	oklab(43.02% -0.02 -0.1611)
OKLCH	oklch(43.02% 0.162 262.9)
XYZ	xyz(9.6778, 7.5283, 37.4948)
Luminance	0.0753 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B47A7 #A77B1B

analogous

#1B8DA7 #1B47A7 #351BA7

triadic

#1B47A7 #A71B47 #47A71B

tetradic

#1B47A7 #A71B8D #A77B1B #1BA735

square

#1B47A7 #A71B8D #A77B1B #1BA735

split-complementary

#1B47A7 #A7351B #8DA71B

monochromatic

#0A1A3E #123172 #1B47A7 #245DDC #5884E4

Accessibility & contrast

On white

8.38

#1B47A7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#1B47A7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B47A7

8.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B47A7	#FFFFFF	#000000	##FFFFFF
##1B47A7	1.00	8.38	2.51	8.38
#FFFFFF	8.38	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054AA

Deuteranopia (green-blind)

#0047A5

Tritanopia (blue-blind)

#005F70

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1b47a7;
/* rgb */ color: rgb(27, 71, 167);
/* oklch */ color: oklch(43.0% 0.162 262.9);

Tailwind

colors: {
  custom: {
    50: '#7179c2',
    500: '#1b47a7',
    950: '#000000',
  },
}

SCSS

$custom: #1b47a7;
$custom-light: #7179c2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b47a7",
  "rgb": {
    "r": 27,
    "g": 71,
    "b": 167
  },
  "hsl": {
    "h": 221.143,
    "s": 72.165,
    "l": 38.039
  },
  "oklch": {
    "l": 0.43022,
    "c": 0.1623,
    "h": 262.9
  },
  "luminance": 0.0753
}

Semantic roles & 50–950 ramp

primary

#1B47A7

secondary

#C8A456

accent

#B639EF

background

#F7F7FC

surface

#EDEDF8

border

#C8C8D1

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1B47A7

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

Preview Lab → · Contrast checker → · Palette generator →