#1B5A82#1B5A82

#1B5A82 is a dark, moderate cyan. Relative luminance 0.092; OKLCH L 44.8% C 0.090 H 241.3°. Best body text is #FFFFFF at 7.42:1 contrast (WCAG AA passes).

Color values

HEX	#1B5A82
RGB	rgb(27, 90, 130)
HSL	hsl(203, 66%, 31%)
HSV	hsv(203, 79%, 51%)
CMYK	cmyk(79.2%, 30.8%, 0%, 49%)
CIE-LAB	lab(36.28, -5.00, -28.02)
CIE-LCH	lch(36.28, 28.46, 259.88°)
OKLab	oklab(44.81% -0.0434 -0.0793)
OKLCH	oklch(44.81% 0.09 241.3)
XYZ	xyz(8.1358, 9.1561, 22.4533)
Luminance	0.0916 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5A82 #82431B

analogous

#1B8276 #1B5A82 #1B2682

triadic

#1B5A82 #821B5A #5A821B

tetradic

#1B5A82 #761B82 #82431B #26821B

square

#1B5A82 #761B82 #82431B #26821B

split-complementary

#1B5A82 #821B26 #82761B

monochromatic

#06141D #10374F #1B5A82 #267DB5 #409DD7

Accessibility & contrast

On white

7.42

#1B5A82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#1B5A82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5A82

7.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5A82	#FFFFFF	#000000	##FFFFFF
##1B5A82	1.00	7.42	2.83	7.42
#FFFFFF	7.42	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#475B84

Deuteranopia (green-blind)

#395181

Tritanopia (blue-blind)

#006468

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #1b5a82;
/* rgb */ color: rgb(27, 90, 130);
/* oklch */ color: oklch(44.8% 0.090 241.3);

Tailwind

colors: {
  custom: {
    50: '#6888a6',
    500: '#1b5a82',
    950: '#000000',
  },
}

SCSS

$custom: #1b5a82;
$custom-light: #6888a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5a82",
  "rgb": {
    "r": 27,
    "g": 90,
    "b": 130
  },
  "hsl": {
    "h": 203.301,
    "s": 65.605,
    "l": 30.784
  },
  "oklch": {
    "l": 0.44807,
    "c": 0.09041,
    "h": 241.3
  },
  "luminance": 0.09157
}

Semantic roles & 50–950 ramp

primary

#1B5A82

secondary

#B67043

accent

#813FE9

background

#F6F8FA

surface

#EBEFF4

border

#C6CACE

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #1B5A82

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

Preview Lab → · Contrast checker → · Palette generator →