#1B5A85#1B5A85

#1B5A85 is a dark, moderate cyan. Relative luminance 0.092; OKLCH L 45.0% C 0.094 H 243.2°. Best body text is #FFFFFF at 7.37:1 contrast (WCAG AA passes).

Color values

HEX	#1B5A85
RGB	rgb(27, 90, 133)
HSL	hsl(204, 66%, 31%)
HSV	hsv(204, 80%, 52%)
CMYK	cmyk(79.7%, 32.3%, 0%, 47.8%)
CIE-LAB	lab(36.44, -3.84, -29.61)
CIE-LCH	lch(36.44, 29.86, 262.61°)
OKLab	oklab(44.98% -0.0424 -0.084)
OKLCH	oklch(44.98% 0.094 243.2)
XYZ	xyz(8.3401, 9.2378, 23.5293)
Luminance	0.0924 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5A85 #85461B

analogous

#1B857B #1B5A85 #1B2585

triadic

#1B5A85 #851B5A #5A851B

tetradic

#1B5A85 #7B1B85 #85461B #25851B

square

#1B5A85 #7B1B85 #85461B #25851B

split-complementary

#1B5A85 #851B25 #857B1B

monochromatic

#06151F #113852 #1B5A85 #257CB8 #429BD9

Accessibility & contrast

On white

7.37

#1B5A85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.85

#1B5A85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5A85

7.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5A85	#FFFFFF	#000000	##FFFFFF
##1B5A85	1.00	7.37	2.85	7.37
#FFFFFF	7.37	1.00	21.00	1.00
#000000	2.85	21.00	1.00	21.00
##FFFFFF	7.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#465B87

Deuteranopia (green-blind)

#375184

Tritanopia (blue-blind)

#006569

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #1b5a85;
/* rgb */ color: rgb(27, 90, 133);
/* oklch */ color: oklch(45.0% 0.094 243.2);

Tailwind

colors: {
  custom: {
    50: '#6988a8',
    500: '#1b5a85',
    950: '#000000',
  },
}

SCSS

$custom: #1b5a85;
$custom-light: #6988a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5a85",
  "rgb": {
    "r": 27,
    "g": 90,
    "b": 133
  },
  "hsl": {
    "h": 204.34,
    "s": 66.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.44981,
    "c": 0.09405,
    "h": 243.2
  },
  "luminance": 0.09239
}

Semantic roles & 50–950 ramp

primary

#1B5A85

secondary

#B87344

accent

#843FE9

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #1B5A85

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

Preview Lab → · Contrast checker → · Palette generator →