#1B5377#1B5377

#1B5377 is a dark, moderate cyan. Relative luminance 0.078; OKLCH L 42.4% C 0.083 H 241.2°. Best body text is #FFFFFF at 8.23:1 contrast (WCAG AA passes).

Color values

HEX	#1B5377
RGB	rgb(27, 83, 119)
HSL	hsl(203, 63%, 29%)
HSV	hsv(203, 77%, 47%)
CMYK	cmyk(77.3%, 30.3%, 0%, 53.3%)
CIE-LAB	lab(33.46, -4.87, -25.67)
CIE-LCH	lch(33.46, 26.12, 259.26°)
OKLab	oklab(42.39% -0.0399 -0.0726)
OKLCH	oklch(42.39% 0.083 241.2)
XYZ	xyz(6.8737, 7.7506, 18.5829)
Luminance	0.0775 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5377 #773F1B

analogous

#1B776D #1B5377 #1B2577

triadic

#1B5377 #771B53 #53771B

tetradic

#1B5377 #6D1B77 #773F1B #25771B

square

#1B5377 #6D1B77 #773F1B #25771B

split-complementary

#1B5377 #771B25 #776D1B

monochromatic

#061119 #103045 #1B5377 #2676A9 #3A97D2

Accessibility & contrast

On white

8.23

#1B5377 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#1B5377 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5377

8.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5377	#FFFFFF	#000000	##FFFFFF
##1B5377	1.00	8.23	2.55	8.23
#FFFFFF	8.23	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#425379

Deuteranopia (green-blind)

#364B76

Tritanopia (blue-blind)

#005C60

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1b5377;
/* rgb */ color: rgb(27, 83, 119);
/* oklch */ color: oklch(42.4% 0.083 241.2);

Tailwind

colors: {
  custom: {
    50: '#65839e',
    500: '#1b5377',
    950: '#000000',
  },
}

SCSS

$custom: #1b5377;
$custom-light: #65839e;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5377",
  "rgb": {
    "r": 27,
    "g": 83,
    "b": 119
  },
  "hsl": {
    "h": 203.478,
    "s": 63.014,
    "l": 28.627
  },
  "oklch": {
    "l": 0.42385,
    "c": 0.08284,
    "h": 241.2
  },
  "luminance": 0.07751
}

Semantic roles & 50–950 ramp

primary

#1B5377

secondary

#AB6B42

accent

#8242E6

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#060A0E

muted

#7A7C7E

Preview Lab

Preview with #1B5377

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

Preview Lab → · Contrast checker → · Palette generator →