#155A81#155A81

#155A81 is a dark, moderate cyan. Relative luminance 0.091; OKLCH L 44.6% C 0.091 H 239.3°. Best body text is #FFFFFF at 7.47:1 contrast (WCAG AA passes).

Color values

HEX	#155A81
RGB	rgb(21, 90, 129)
HSL	hsl(202, 72%, 29%)
HSV	hsv(202, 84%, 51%)
CMYK	cmyk(83.7%, 30.2%, 0%, 49.4%)
CIE-LAB	lab(36.09, -6.08, -27.71)
CIE-LCH	lch(36.09, 28.37, 257.62°)
OKLab	oklab(44.6% -0.0465 -0.0785)
OKLCH	oklch(44.6% 0.091 239.3)
XYZ	xyz(7.9263, 9.0558, 22.0948)
Luminance	0.0906 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#155A81 #813C15

analogous

#158172 #155A81 #152481

triadic

#155A81 #81155A #5A8115

tetradic

#155A81 #721581 #813C15 #248115

square

#155A81 #721581 #813C15 #248115

split-complementary

#155A81 #811524 #817215

monochromatic

#04121A #0C354C #155A81 #1E7FB6 #33A0DE

Accessibility & contrast

On white

7.47

#155A81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#155A81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #155A81

7.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##155A81	#FFFFFF	#000000	##FFFFFF
##155A81	1.00	7.47	2.81	7.47
#FFFFFF	7.47	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#475A83

Deuteranopia (green-blind)

#395180

Tritanopia (blue-blind)

#006468

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #155a81;
/* rgb */ color: rgb(21, 90, 129);
/* oklch */ color: oklch(44.6% 0.091 239.3);

Tailwind

colors: {
  custom: {
    50: '#6688a6',
    500: '#155a81',
    950: '#000000',
  },
}

SCSS

$custom: #155a81;
$custom-light: #6688a6;
$custom-dark: #000000;

JSON

{
  "hex": "#155a81",
  "rgb": {
    "r": 21,
    "g": 90,
    "b": 129
  },
  "hsl": {
    "h": 201.667,
    "s": 72,
    "l": 29.412
  },
  "oklch": {
    "l": 0.44598,
    "c": 0.09126,
    "h": 239.3
  },
  "luminance": 0.09057
}

Semantic roles & 50–950 ramp

primary

#155A81

secondary

#B6683C

accent

#7B39EF

background

#F6F8FA

surface

#EBEFF4

border

#C6CACE

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #155A81

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

Preview Lab → · Contrast checker → · Palette generator →