#1B5477#1B5477

#1B5477 is a dark, moderate cyan. Relative luminance 0.079; OKLCH L 42.6% C 0.082 H 240.0°. Best body text is #FFFFFF at 8.14:1 contrast (WCAG AA passes).

Color values

HEX	#1B5477
RGB	rgb(27, 84, 119)
HSL	hsl(203, 63%, 29%)
HSV	hsv(203, 77%, 47%)
CMYK	cmyk(77.3%, 29.4%, 0%, 53.3%)
CIE-LAB	lab(33.78, -5.49, -25.16)
CIE-LCH	lch(33.78, 25.75, 257.68°)
OKLab	oklab(42.64% -0.041 -0.0711)
OKLCH	oklch(42.64% 0.082 240)
XYZ	xyz(6.9508, 7.9048, 18.6086)
Luminance	0.0791 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5477 #773E1B

analogous

#1B776C #1B5477 #1B2677

triadic

#1B5477 #771B54 #54771B

tetradic

#1B5477 #6C1B77 #773E1B #26771B

square

#1B5477 #6C1B77 #773E1B #26771B

split-complementary

#1B5477 #771B26 #776C1B

monochromatic

#061219 #103145 #1B5477 #2677A9 #3A98D2

Accessibility & contrast

On white

8.14

#1B5477 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#1B5477 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5477

8.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5477	#FFFFFF	#000000	##FFFFFF
##1B5477	1.00	8.14	2.58	8.14
#FFFFFF	8.14	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#445479

Deuteranopia (green-blind)

#374C76

Tritanopia (blue-blind)

#005D60

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1b5477;
/* rgb */ color: rgb(27, 84, 119);
/* oklch */ color: oklch(42.6% 0.082 240.0);

Tailwind

colors: {
  custom: {
    50: '#66849e',
    500: '#1b5477',
    950: '#000000',
  },
}

SCSS

$custom: #1b5477;
$custom-light: #66849e;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5477",
  "rgb": {
    "r": 27,
    "g": 84,
    "b": 119
  },
  "hsl": {
    "h": 202.826,
    "s": 63.014,
    "l": 28.627
  },
  "oklch": {
    "l": 0.42643,
    "c": 0.08205,
    "h": 240
  },
  "luminance": 0.07906
}

Semantic roles & 50–950 ramp

primary

#1B5477

secondary

#AB6A42

accent

#8042E6

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#060A0E

muted

#7A7C7E

Preview Lab

Preview with #1B5477

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

Preview Lab → · Contrast checker → · Palette generator →