#155B81#155B81

#155B81 is a dark, moderate cyan. Relative luminance 0.092; OKLCH L 44.9% C 0.090 H 238.3°. Best body text is #FFFFFF at 7.38:1 contrast (WCAG AA passes).

Color values

HEX	#155B81
RGB	rgb(21, 91, 129)
HSL	hsl(201, 72%, 29%)
HSV	hsv(201, 84%, 51%)
CMYK	cmyk(83.7%, 29.5%, 0%, 49.4%)
CIE-LAB	lab(36.42, -6.70, -27.21)
CIE-LCH	lch(36.42, 28.02, 256.16°)
OKLab	oklab(44.86% -0.0475 -0.077)
OKLCH	oklch(44.86% 0.091 238.3)
XYZ	xyz(8.0112, 9.2256, 22.1231)
Luminance	0.0923 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#155B81 #813B15

analogous

#158171 #155B81 #152581

triadic

#155B81 #81155B #5B8115

tetradic

#155B81 #711581 #813B15 #258115

square

#155B81 #711581 #813B15 #258115

split-complementary

#155B81 #811525 #817115

monochromatic

#04131A #0C364C #155B81 #1E80B6 #33A2DE

Accessibility & contrast

On white

7.38

#155B81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.85

#155B81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #155B81

7.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##155B81	#FFFFFF	#000000	##FFFFFF
##155B81	1.00	7.38	2.85	7.38
#FFFFFF	7.38	1.00	21.00	1.00
#000000	2.85	21.00	1.00	21.00
##FFFFFF	7.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#495B83

Deuteranopia (green-blind)

#3A5180

Tritanopia (blue-blind)

#006568

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #155b81;
/* rgb */ color: rgb(21, 91, 129);
/* oklch */ color: oklch(44.9% 0.090 238.3);

Tailwind

colors: {
  custom: {
    50: '#6689a5',
    500: '#155b81',
    950: '#000000',
  },
}

SCSS

$custom: #155b81;
$custom-light: #6689a5;
$custom-dark: #000000;

JSON

{
  "hex": "#155b81",
  "rgb": {
    "r": 21,
    "g": 91,
    "b": 129
  },
  "hsl": {
    "h": 201.111,
    "s": 72,
    "l": 29.412
  },
  "oklch": {
    "l": 0.44855,
    "c": 0.0905,
    "h": 238.3
  },
  "luminance": 0.09227
}

Semantic roles & 50–950 ramp

primary

#155B81

secondary

#B6673C

accent

#7939EF

background

#F6F8FA

surface

#EBF0F4

border

#C6CBCE

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #155B81

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

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