#1B4D80#1B4D80

#1B4D80 is a dark, moderate cyan. Relative luminance 0.071; OKLCH L 41.4% C 0.101 H 252.0°. Best body text is #FFFFFF at 8.68:1 contrast (WCAG AA passes).

Color values

HEX	#1B4D80
RGB	rgb(27, 77, 128)
HSL	hsl(210, 65%, 30%)
HSV	hsv(210, 79%, 50%)
CMYK	cmyk(78.9%, 39.8%, 0%, 49.8%)
CIE-LAB	lab(32.03, 2.56, -33.51)
CIE-LCH	lch(32.03, 33.60, 274.38°)
OKLab	oklab(41.42% -0.0311 -0.0956)
OKLCH	oklch(41.42% 0.101 252)
XYZ	xyz(7.0007, 7.0985, 21.4191)
Luminance	0.0710 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4D80 #804E1B

analogous

#1B7F80 #1B4D80 #1C1B80

triadic

#1B4D80 #801B4D #4D801B

tetradic

#1B4D80 #801B7F #804E1B #1B801C

square

#1B4D80 #801B7F #804E1B #1B801C

split-complementary

#1B4D80 #801C1B #7F801B

monochromatic

#06101B #102F4D #1B4D80 #266BB3 #3F8AD6

Accessibility & contrast

On white

8.68

#1B4D80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#1B4D80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4D80

8.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4D80	#FFFFFF	#000000	##FFFFFF
##1B4D80	1.00	8.68	2.42	8.68
#FFFFFF	8.68	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#355082

Deuteranopia (green-blind)

#25477F

Tritanopia (blue-blind)

#005960

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1b4d80;
/* rgb */ color: rgb(27, 77, 128);
/* oklch */ color: oklch(41.4% 0.101 252.0);

Tailwind

colors: {
  custom: {
    50: '#677ea5',
    500: '#1b4d80',
    950: '#000000',
  },
}

SCSS

$custom: #1b4d80;
$custom-light: #677ea5;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4d80",
  "rgb": {
    "r": 27,
    "g": 77,
    "b": 128
  },
  "hsl": {
    "h": 210.297,
    "s": 65.161,
    "l": 30.392
  },
  "oklch": {
    "l": 0.41424,
    "c": 0.10052,
    "h": 252
  },
  "luminance": 0.07099
}

Semantic roles & 50–950 ramp

primary

#1B4D80

secondary

#B47C43

accent

#9540E8

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#07090F

muted

#7A7B7F

Preview Lab

Preview with #1B4D80

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

Preview Lab → · Contrast checker → · Palette generator →