#1B4873#1B4873

#1B4873 is a dark, moderate cyan. Relative luminance 0.061; OKLCH L 39.3% C 0.088 H 250.2°. Best body text is #FFFFFF at 9.45:1 contrast (WCAG AA passes).

Color values

HEX	#1B4873
RGB	rgb(27, 72, 115)
HSL	hsl(209, 62%, 28%)
HSV	hsv(209, 77%, 45%)
CMYK	cmyk(76.5%, 37.4%, 0%, 54.9%)
CIE-LAB	lab(29.68, 0.68, -29.12)
CIE-LCH	lch(29.68, 29.13, 271.33°)
OKLab	oklab(39.33% -0.0297 -0.0828)
OKLCH	oklch(39.33% 0.088 250.2)
XYZ	xyz(5.8627, 6.1049, 17.0857)
Luminance	0.0611 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4873 #73461B

analogous

#1B7372 #1B4873 #1B1C73

triadic

#1B4873 #731B48 #48731B

tetradic

#1B4873 #721B73 #73461B #1C731B

square

#1B4873 #721B73 #73461B #1C731B

split-complementary

#1B4873 #731B1C #73721B

monochromatic

#061019 #0F2941 #1B4873 #2767A5 #3886D0

Accessibility & contrast

On white

9.45

#1B4873 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#1B4873 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4873

9.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4873	#FFFFFF	#000000	##FFFFFF
##1B4873	1.00	9.45	2.22	9.45
#FFFFFF	9.45	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#344A75

Deuteranopia (green-blind)

#274272

Tritanopia (blue-blind)

#005258

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1b4873;
/* rgb */ color: rgb(27, 72, 115);
/* oklch */ color: oklch(39.3% 0.088 250.2);

Tailwind

colors: {
  custom: {
    50: '#647a9b',
    500: '#1b4873',
    950: '#000000',
  },
}

SCSS

$custom: #1b4873;
$custom-light: #647a9b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4873",
  "rgb": {
    "r": 27,
    "g": 72,
    "b": 115
  },
  "hsl": {
    "h": 209.318,
    "s": 61.972,
    "l": 27.843
  },
  "oklch": {
    "l": 0.39333,
    "c": 0.088,
    "h": 250.2
  },
  "luminance": 0.06106
}

Semantic roles & 50–950 ramp

primary

#1B4873

secondary

#A87442

accent

#9243E5

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#06090E

muted

#7A7B7E

Preview Lab

Preview with #1B4873

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

Preview Lab → · Contrast checker → · Palette generator →