#1B5680#1B5680

#1B5680 is a dark, moderate cyan. Relative luminance 0.084; OKLCH L 43.7% C 0.091 H 244.0°. Best body text is #FFFFFF at 7.81:1 contrast (WCAG AA passes).

Color values

HEX	#1B5680
RGB	rgb(27, 86, 128)
HSL	hsl(205, 65%, 30%)
HSV	hsv(205, 79%, 50%)
CMYK	cmyk(78.9%, 32.8%, 0%, 49.8%)
CIE-LAB	lab(34.90, -3.27, -28.97)
CIE-LCH	lch(34.90, 29.16, 263.57°)
OKLab	oklab(43.68% -0.04 -0.0822)
OKLCH	oklch(43.68% 0.091 244)
XYZ	xyz(7.6746, 8.4462, 21.6437)
Luminance	0.0845 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5680 #80451B

analogous

#1B8077 #1B5680 #1B2480

triadic

#1B5680 #801B56 #56801B

tetradic

#1B5680 #771B80 #80451B #24801B

square

#1B5680 #771B80 #80451B #24801B

split-complementary

#1B5680 #801B24 #80771B

monochromatic

#06121B #10344D #1B5680 #2678B3 #3F97D6

Accessibility & contrast

On white

7.81

#1B5680 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#1B5680 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5680

7.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5680	#FFFFFF	#000000	##FFFFFF
##1B5680	1.00	7.81	2.69	7.81
#FFFFFF	7.81	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#435782

Deuteranopia (green-blind)

#344E7F

Tritanopia (blue-blind)

#006065

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1b5680;
/* rgb */ color: rgb(27, 86, 128);
/* oklch */ color: oklch(43.7% 0.091 244.0);

Tailwind

colors: {
  custom: {
    50: '#6785a5',
    500: '#1b5680',
    950: '#000000',
  },
}

SCSS

$custom: #1b5680;
$custom-light: #6785a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5680",
  "rgb": {
    "r": 27,
    "g": 86,
    "b": 128
  },
  "hsl": {
    "h": 204.95,
    "s": 65.161,
    "l": 30.392
  },
  "oklch": {
    "l": 0.43676,
    "c": 0.09138,
    "h": 244
  },
  "luminance": 0.08447
}

Semantic roles & 50–950 ramp

primary

#1B5680

secondary

#B47243

accent

#8640E8

background

#F6F8FA

surface

#EBEFF4

border

#C6CACE

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #1B5680

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

Preview Lab → · Contrast checker → · Palette generator →