#1B5166#1B5166

#1B5166 is a dark, moderate cyan. Relative luminance 0.071; OKLCH L 40.9% C 0.066 H 227.6°. Best body text is #FFFFFF at 8.69:1 contrast (WCAG AA passes).

Color values

HEX	#1B5166
RGB	rgb(27, 81, 102)
HSL	hsl(197, 58%, 25%)
HSV	hsv(197, 74%, 40%)
CMYK	cmyk(73.5%, 20.6%, 0%, 60%)
CIE-LAB	lab(31.98, -10.06, -17.32)
CIE-LCH	lch(31.98, 20.03, 239.86°)
OKLab	oklab(40.94% -0.0442 -0.0485)
OKLCH	oklch(40.94% 0.066 227.6)
XYZ	xyz(5.7917, 7.0765, 13.6285)
Luminance	0.0708 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5166 #66301B

analogous

#1B6655 #1B5166 #1B2B66

triadic

#1B5166 #661B51 #51661B

tetradic

#1B5166 #551B66 #66301B #2B661B

square

#1B5166 #551B66 #66301B #2B661B

split-complementary

#1B5166 #661B2B #66551B

monochromatic

#061318 #0E2B36 #1B5166 #287796 #359EC7

Accessibility & contrast

On white

8.69

#1B5166 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#1B5166 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5166

8.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5166	#FFFFFF	#000000	##FFFFFF
##1B5166	1.00	8.69	2.42	8.69
#FFFFFF	8.69	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#464F67

Deuteranopia (green-blind)

#3C4866

Tritanopia (blue-blind)

#005758

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1b5166;
/* rgb */ color: rgb(27, 81, 102);
/* oklch */ color: oklch(40.9% 0.066 227.6);

Tailwind

colors: {
  custom: {
    50: '#628191',
    500: '#1b5166',
    950: '#000000',
  },
}

SCSS

$custom: #1b5166;
$custom-light: #628191;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5166",
  "rgb": {
    "r": 27,
    "g": 81,
    "b": 102
  },
  "hsl": {
    "h": 196.8,
    "s": 58.14,
    "l": 25.294
  },
  "oklch": {
    "l": 0.40941,
    "c": 0.06564,
    "h": 227.6
  },
  "luminance": 0.07077
}

Semantic roles & 50–950 ramp

primary

#1B5166

secondary

#9B5B41

accent

#7246E1

background

#F6F7F8

surface

#EBEEF0

border

#C6C9CB

text

#060A0C

muted

#7A7C7D

Preview Lab

Preview with #1B5166

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

Preview Lab → · Contrast checker → · Palette generator →