#155F6F#155F6F

#155F6F is a dark, moderate cyan. Relative luminance 0.095; OKLCH L 45.0% C 0.073 H 216.1°. Best body text is #FFFFFF at 7.25:1 contrast (WCAG AA passes).

Color values

HEX	#155F6F
RGB	rgb(21, 95, 111)
HSL	hsl(191, 68%, 26%)
HSV	hsv(191, 81%, 44%)
CMYK	cmyk(81.1%, 14.4%, 0%, 56.5%)
CIE-LAB	lab(36.91, -15.83, -15.37)
CIE-LCH	lch(36.91, 22.06, 224.15°)
OKLab	oklab(44.98% -0.0588 -0.0429)
OKLCH	oklch(44.98% 0.073 216.1)
XYZ	xyz(7.2695, 9.4907, 16.4846)
Luminance	0.0949 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#155F6F #6F2515

analogous

#156F52 #155F6F #15326F

triadic

#155F6F #6F155F #5F6F15

tetradic

#155F6F #52156F #6F2515 #326F15

square

#155F6F #52156F #6F2515 #326F15

split-complementary

#155F6F #6F1532 #6F5215

monochromatic

#05161A #0B333C #155F6F #1F8BA2 #28B7D6

Accessibility & contrast

On white

7.25

#155F6F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#155F6F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #155F6F

7.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##155F6F	#FFFFFF	#000000	##FFFFFF
##155F6F	1.00	7.25	2.90	7.25
#FFFFFF	7.25	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#545C70

Deuteranopia (green-blind)

#48536F

Tritanopia (blue-blind)

#006564

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #155f6f;
/* rgb */ color: rgb(21, 95, 111);
/* oklch */ color: oklch(45.0% 0.073 216.1);

Tailwind

colors: {
  custom: {
    50: '#638c98',
    500: '#155f6f',
    950: '#000000',
  },
}

SCSS

$custom: #155f6f;
$custom-light: #638c98;
$custom-dark: #000000;

JSON

{
  "hex": "#155f6f",
  "rgb": {
    "r": 21,
    "g": 95,
    "b": 111
  },
  "hsl": {
    "h": 190.667,
    "s": 68.182,
    "l": 25.882
  },
  "oklch": {
    "l": 0.44982,
    "c": 0.0728,
    "h": 216.1
  },
  "luminance": 0.09492
}

Semantic roles & 50–950 ramp

primary

#155F6F

secondary

#A54D3A

accent

#5C3DEB

background

#F6F8F9

surface

#EBF0F2

border

#C6CBCC

text

#060C0D

muted

#7A7D7E

Preview Lab

Preview with #155F6F

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

Preview Lab → · Contrast checker → · Palette generator →