#155E6F#155E6F

#155E6F is a dark, moderate cyan. Relative luminance 0.093; OKLCH L 44.7% C 0.073 H 217.5°. Best body text is #FFFFFF at 7.34:1 contrast (WCAG AA passes).

Color values

HEX	#155E6F
RGB	rgb(21, 94, 111)
HSL	hsl(191, 68%, 26%)
HSV	hsv(191, 81%, 44%)
CMYK	cmyk(81.1%, 15.3%, 0%, 56.5%)
CIE-LAB	lab(36.58, -15.26, -15.88)
CIE-LCH	lch(36.58, 22.03, 226.13°)
OKLab	oklab(44.71% -0.0577 -0.0444)
OKLCH	oklch(44.71% 0.073 217.5)
XYZ	xyz(7.1800, 9.3117, 16.4548)
Luminance	0.0931 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#155E6F #6F2615

analogous

#156F53 #155E6F #15316F

triadic

#155E6F #6F155E #5E6F15

tetradic

#155E6F #53156F #6F2615 #316F15

square

#155E6F #53156F #6F2615 #316F15

split-complementary

#155E6F #6F1531 #6F5315

monochromatic

#05161A #0B323C #155E6F #1F8AA2 #28B5D6

Accessibility & contrast

On white

7.34

#155E6F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.86

#155E6F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #155E6F

7.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##155E6F	#FFFFFF	#000000	##FFFFFF
##155E6F	1.00	7.34	2.86	7.34
#FFFFFF	7.34	1.00	21.00	1.00
#000000	2.86	21.00	1.00	21.00
##FFFFFF	7.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#535B70

Deuteranopia (green-blind)

#47526F

Tritanopia (blue-blind)

#006463

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #155e6f;
/* rgb */ color: rgb(21, 94, 111);
/* oklch */ color: oklch(44.7% 0.073 217.5);

Tailwind

colors: {
  custom: {
    50: '#638b98',
    500: '#155e6f',
    950: '#000000',
  },
}

SCSS

$custom: #155e6f;
$custom-light: #638b98;
$custom-dark: #000000;

JSON

{
  "hex": "#155e6f",
  "rgb": {
    "r": 21,
    "g": 94,
    "b": 111
  },
  "hsl": {
    "h": 191.333,
    "s": 68.182,
    "l": 25.882
  },
  "oklch": {
    "l": 0.44713,
    "c": 0.07282,
    "h": 217.5
  },
  "luminance": 0.09313
}

Semantic roles & 50–950 ramp

primary

#155E6F

secondary

#A54F3A

accent

#5E3DEB

background

#F6F8F9

surface

#EBF0F2

border

#C6CBCC

text

#060C0D

muted

#7A7D7E

Preview Lab

Preview with #155E6F

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

Preview Lab → · Contrast checker → · Palette generator →