#1B4D82#1B4D82

#1B4D82 is a dark, moderate cyan. Relative luminance 0.072; OKLCH L 41.6% C 0.103 H 252.8°. Best body text is #FFFFFF at 8.64:1 contrast (WCAG AA passes).

Color values

HEX	#1B4D82
RGB	rgb(27, 77, 130)
HSL	hsl(211, 66%, 31%)
HSV	hsv(211, 79%, 51%)
CMYK	cmyk(79.2%, 40.8%, 0%, 49%)
CIE-LAB	lab(32.15, 3.37, -34.55)
CIE-LCH	lch(32.15, 34.72, 275.57°)
OKLab	oklab(41.56% -0.0306 -0.0986)
OKLCH	oklch(41.56% 0.103 252.8)
XYZ	xyz(7.1336, 7.1516, 22.1192)
Luminance	0.0715 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4D82 #82501B

analogous

#1B8082 #1B4D82 #1D1B82

triadic

#1B4D82 #821B4D #4D821B

tetradic

#1B4D82 #821B80 #82501B #1B821D

square

#1B4D82 #821B80 #82501B #1B821D

split-complementary

#1B4D82 #821D1B #80821B

monochromatic

#06111D #102F4F #1B4D82 #266BB5 #4089D7

Accessibility & contrast

On white

8.64

#1B4D82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#1B4D82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4D82

8.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4D82	#FFFFFF	#000000	##FFFFFF
##1B4D82	1.00	8.64	2.43	8.64
#FFFFFF	8.64	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#345184

Deuteranopia (green-blind)

#234781

Tritanopia (blue-blind)

#005A61

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1b4d82;
/* rgb */ color: rgb(27, 77, 130);
/* oklch */ color: oklch(41.6% 0.103 252.8);

Tailwind

colors: {
  custom: {
    50: '#687ea6',
    500: '#1b4d82',
    950: '#000000',
  },
}

SCSS

$custom: #1b4d82;
$custom-light: #687ea6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4d82",
  "rgb": {
    "r": 27,
    "g": 77,
    "b": 130
  },
  "hsl": {
    "h": 210.874,
    "s": 65.605,
    "l": 30.784
  },
  "oklch": {
    "l": 0.41556,
    "c": 0.10329,
    "h": 252.8
  },
  "luminance": 0.07152
}

Semantic roles & 50–950 ramp

primary

#1B4D82

secondary

#B67E43

accent

#963FE9

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#07090F

muted

#7A7B7F

Preview Lab

Preview with #1B4D82

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

Preview Lab → · Contrast checker → · Palette generator →