#155A6B#155A6B

#155A6B is a dark, moderate cyan. Relative luminance 0.085; OKLCH L 43.4% C 0.071 H 218.5°. Best body text is #FFFFFF at 7.76:1 contrast (WCAG AA passes).

Color values

HEX	#155A6B
RGB	rgb(21, 90, 107)
HSL	hsl(192, 67%, 25%)
HSV	hsv(192, 80%, 42%)
CMYK	cmyk(80.4%, 15.9%, 0%, 58%)
CIE-LAB	lab(35.07, -14.42, -15.71)
CIE-LCH	lch(35.07, 21.33, 227.46°)
OKLab	oklab(43.44% -0.0552 -0.0439)
OKLCH	oklch(43.44% 0.071 218.5)
XYZ	xyz(6.6181, 8.5325, 15.2052)
Luminance	0.0853 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#155A6B #6B2615

analogous

#156B51 #155A6B #152F6B

triadic

#155A6B #6B155A #5A6B15

tetradic

#155A6B #51156B #6B2615 #2F6B15

square

#155A6B #51156B #6B2615 #2F6B15

split-complementary

#155A6B #6B152F #6B5115

monochromatic

#05161A #0B2F38 #155A6B #1F859E #29B0D1

Accessibility & contrast

On white

7.76

#155A6B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#155A6B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #155A6B

7.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##155A6B	#FFFFFF	#000000	##FFFFFF
##155A6B	1.00	7.76	2.71	7.76
#FFFFFF	7.76	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F576C

Deuteranopia (green-blind)

#444F6B

Tritanopia (blue-blind)

#00605F

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #155a6b;
/* rgb */ color: rgb(21, 90, 107);
/* oklch */ color: oklch(43.4% 0.071 218.5);

Tailwind

colors: {
  custom: {
    50: '#628895',
    500: '#155a6b',
    950: '#000000',
  },
}

SCSS

$custom: #155a6b;
$custom-light: #628895;
$custom-dark: #000000;

JSON

{
  "hex": "#155a6b",
  "rgb": {
    "r": 21,
    "g": 90,
    "b": 107
  },
  "hsl": {
    "h": 191.86,
    "s": 67.188,
    "l": 25.098
  },
  "oklch": {
    "l": 0.43443,
    "c": 0.07053,
    "h": 218.5
  },
  "luminance": 0.08533
}

Semantic roles & 50–950 ramp

primary

#155A6B

secondary

#A24F3A

accent

#603EEA

background

#F6F8F9

surface

#EBF0F1

border

#C6CBCB

text

#060B0D

muted

#7A7C7E

Preview Lab

Preview with #155A6B

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

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