#155E51#155E51

#155E51 is a dark, moderate teal. Relative luminance 0.088; OKLCH L 43.5% C 0.072 H 177.9°. Best body text is #FFFFFF at 7.63:1 contrast (WCAG AA passes).

Color values

HEX	#155E51
RGB	rgb(21, 94, 81)
HSL	hsl(169, 63%, 23%)
HSV	hsv(169, 78%, 37%)
CMYK	cmyk(77.7%, 0%, 13.8%, 63.1%)
CIE-LAB	lab(35.51, -25.24, 1.16)
CIE-LCH	lch(35.51, 25.26, 177.37°)
OKLab	oklab(43.5% -0.0724 0.0027)
OKLCH	oklch(43.5% 0.072 177.9)
XYZ	xyz(5.7964, 8.7582, 9.1680)
Luminance	0.0876 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#155E51 #5E1522

analogous

#155E2C #155E51 #15465E

triadic

#155E51 #51155E #5E5115

tetradic

#155E51 #2C155E #5E1522 #465E15

square

#155E51 #2C155E #5E1522 #465E15

split-complementary

#155E51 #5E1546 #5E2C15

monochromatic

#061916 #0A2C26 #155E51 #20907C #2BC2A7

Accessibility & contrast

On white

7.63

#155E51 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#155E51 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #155E51

7.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##155E51	#FFFFFF	#000000	##FFFFFF
##155E51	1.00	7.63	2.75	7.63
#FFFFFF	7.63	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5850

Deuteranopia (green-blind)

#505152

Tritanopia (blue-blind)

#00605A

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #155e51;
/* rgb */ color: rgb(21, 94, 81);
/* oklch */ color: oklch(43.5% 0.072 177.9);

Tailwind

colors: {
  custom: {
    50: '#5f8c81',
    500: '#155e51',
    950: '#000000',
  },
}

SCSS

$custom: #155e51;
$custom-light: #5f8c81;
$custom-dark: #000000;

JSON

{
  "hex": "#155e51",
  "rgb": {
    "r": 21,
    "g": 94,
    "b": 81
  },
  "hsl": {
    "h": 169.315,
    "s": 63.478,
    "l": 22.549
  },
  "oklch": {
    "l": 0.43499,
    "c": 0.07243,
    "h": 177.9
  },
  "luminance": 0.08759
}

Semantic roles & 50–950 ramp

primary

#155E51

secondary

#95394A

accent

#415FE7

background

#F5F8F7

surface

#EAF0EE

border

#C6CBC9

text

#050C0A

muted

#797D7C

Preview Lab

Preview with #155E51

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

Preview Lab → · Contrast checker → · Palette generator →