#155E5B#155E5B

#155E5B is a dark, moderate teal. Relative luminance 0.089; OKLCH L 43.9% C 0.068 H 190.8°. Best body text is #FFFFFF at 7.54:1 contrast (WCAG AA passes).

Color values

HEX	#155E5B
RGB	rgb(21, 94, 91)
HSL	hsl(178, 63%, 23%)
HSV	hsv(178, 78%, 37%)
CMYK	cmyk(77.7%, 0%, 3.2%, 63.1%)
CIE-LAB	lab(35.83, -22.13, -4.60)
CIE-LCH	lch(35.83, 22.61, 191.74°)
OKLab	oklab(43.86% -0.0672 -0.0128)
OKLCH	oklch(43.86% 0.068 190.8)
XYZ	xyz(6.1994, 8.9194, 11.2904)
Luminance	0.0892 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#155E5B #5E1518

analogous

#155E36 #155E5B #153D5E

triadic

#155E5B #5B155E #5E5B15

tetradic

#155E5B #36155E #5E1518 #3D5E15

square

#155E5B #36155E #5E1518 #3D5E15

split-complementary

#155E5B #5E153D #5E3615

monochromatic

#061918 #0A2C2B #155E5B #20908B #2BC2BC

Accessibility & contrast

On white

7.54

#155E5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#155E5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #155E5B

7.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##155E5B	#FFFFFF	#000000	##FFFFFF
##155E5B	1.00	7.54	2.78	7.54
#FFFFFF	7.54	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#58595B

Deuteranopia (green-blind)

#4E515C

Tritanopia (blue-blind)

#00615D

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #155e5b;
/* rgb */ color: rgb(21, 94, 91);
/* oklch */ color: oklch(43.9% 0.068 190.8);

Tailwind

colors: {
  custom: {
    50: '#608c89',
    500: '#155e5b',
    950: '#000000',
  },
}

SCSS

$custom: #155e5b;
$custom-light: #608c89;
$custom-dark: #000000;

JSON

{
  "hex": "#155e5b",
  "rgb": {
    "r": 21,
    "g": 94,
    "b": 91
  },
  "hsl": {
    "h": 177.534,
    "s": 63.478,
    "l": 22.549
  },
  "oklch": {
    "l": 0.43859,
    "c": 0.06843,
    "h": 190.8
  },
  "luminance": 0.0892
}

Semantic roles & 50–950 ramp

primary

#155E5B

secondary

#95393D

accent

#4148E7

background

#F6F8F8

surface

#EBF0F0

border

#C6CBCB

text

#050C0B

muted

#7A7D7C

Preview Lab

Preview with #155E5B

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

Preview Lab → · Contrast checker → · Palette generator →