#155B6D#155B6D

#155B6D is a dark, moderate cyan. Relative luminance 0.087; OKLCH L 43.8% C 0.072 H 219.5°. Best body text is #FFFFFF at 7.64:1 contrast (WCAG AA passes).

Color values

HEX	#155B6D
RGB	rgb(21, 91, 109)
HSL	hsl(192, 68%, 25%)
HSV	hsv(192, 81%, 43%)
CMYK	cmyk(80.7%, 16.5%, 0%, 57.3%)
CIE-LAB	lab(35.49, -14.27, -16.31)
CIE-LCH	lch(35.49, 21.67, 228.82°)
OKLab	oklab(43.81% -0.0554 -0.0456)
OKLCH	oklch(43.81% 0.072 219.5)
XYZ	xyz(6.8095, 8.7449, 15.7941)
Luminance	0.0875 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#155B6D #6D2715

analogous

#156D53 #155B6D #152F6D

triadic

#155B6D #6D155B #5B6D15

tetradic

#155B6D #53156D #6D2715 #2F6D15

square

#155B6D #53156D #6D2715 #2F6D15

split-complementary

#155B6D #6D152F #6D5315

monochromatic

#05151A #0B303A #155B6D #1F86A0 #29B1D4

Accessibility & contrast

On white

7.64

#155B6D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#155B6D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #155B6D

7.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##155B6D	#FFFFFF	#000000	##FFFFFF
##155B6D	1.00	7.64	2.75	7.64
#FFFFFF	7.64	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#50586E

Deuteranopia (green-blind)

#44506D

Tritanopia (blue-blind)

#006161

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #155b6d;
/* rgb */ color: rgb(21, 91, 109);
/* oklch */ color: oklch(43.8% 0.072 219.5);

Tailwind

colors: {
  custom: {
    50: '#628997',
    500: '#155b6d',
    950: '#000000',
  },
}

SCSS

$custom: #155b6d;
$custom-light: #628997;
$custom-dark: #000000;

JSON

{
  "hex": "#155b6d",
  "rgb": {
    "r": 21,
    "g": 91,
    "b": 109
  },
  "hsl": {
    "h": 192.273,
    "s": 67.692,
    "l": 25.49
  },
  "oklch": {
    "l": 0.43809,
    "c": 0.07176,
    "h": 219.5
  },
  "luminance": 0.08746
}

Semantic roles & 50–950 ramp

primary

#155B6D

secondary

#A3503A

accent

#613DEB

background

#F6F8F9

surface

#EBF0F2

border

#C6CBCC

text

#060B0D

muted

#7A7C7E

Preview Lab

Preview with #155B6D

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

Preview Lab → · Contrast checker → · Palette generator →