#1B5966#1B5966

#1B5966 is a dark, moderate cyan. Relative luminance 0.083; OKLCH L 43.1% C 0.065 H 214.5°. Best body text is #FFFFFF at 7.87:1 contrast (WCAG AA passes).

Color values

HEX	#1B5966
RGB	rgb(27, 89, 102)
HSL	hsl(190, 58%, 25%)
HSV	hsv(190, 74%, 40%)
CMYK	cmyk(73.5%, 12.7%, 0%, 60%)
CIE-LAB	lab(34.67, -14.78, -13.19)
CIE-LCH	lch(34.67, 19.81, 221.75°)
OKLab	oklab(43.1% -0.0534 -0.0367)
OKLCH	oklch(43.1% 0.065 214.5)
XYZ	xyz(6.4216, 8.3363, 13.8384)
Luminance	0.0834 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5966 #66281B

analogous

#1B664D #1B5966 #1B3366

triadic

#1B5966 #661B59 #59661B

tetradic

#1B5966 #4D1B66 #66281B #33661B

square

#1B5966 #4D1B66 #66281B #33661B

split-complementary

#1B5966 #661B33 #664D1B

monochromatic

#061518 #0E2F36 #1B5966 #288396 #35ADC7

Accessibility & contrast

On white

7.87

#1B5966 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#1B5966 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5966

7.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5966	#FFFFFF	#000000	##FFFFFF
##1B5966	1.00	7.87	2.67	7.87
#FFFFFF	7.87	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#505667

Deuteranopia (green-blind)

#454E66

Tritanopia (blue-blind)

#005E5D

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1b5966;
/* rgb */ color: rgb(27, 89, 102);
/* oklch */ color: oklch(43.1% 0.065 214.5);

Tailwind

colors: {
  custom: {
    50: '#638891',
    500: '#1b5966',
    950: '#000000',
  },
}

SCSS

$custom: #1b5966;
$custom-light: #638891;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5966",
  "rgb": {
    "r": 27,
    "g": 89,
    "b": 102
  },
  "hsl": {
    "h": 190.4,
    "s": 58.14,
    "l": 25.294
  },
  "oklch": {
    "l": 0.431,
    "c": 0.06477,
    "h": 214.5
  },
  "luminance": 0.08337
}

Semantic roles & 50–950 ramp

primary

#1B5966

secondary

#9B5141

accent

#6146E1

background

#F6F8F8

surface

#EBEFF0

border

#C6CACB

text

#060B0C

muted

#7A7C7D

Preview Lab

Preview with #1B5966

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

Preview Lab → · Contrast checker → · Palette generator →