#155B6E#155B6E

#155B6E is a dark, moderate cyan. Relative luminance 0.088; OKLCH L 43.9% C 0.072 H 220.7°. Best body text is #FFFFFF at 7.63:1 contrast (WCAG AA passes).

Color values

HEX	#155B6E
RGB	rgb(21, 91, 110)
HSL	hsl(193, 68%, 26%)
HSV	hsv(193, 81%, 43%)
CMYK	cmyk(80.9%, 17.3%, 0%, 56.9%)
CIE-LAB	lab(35.53, -13.90, -16.87)
CIE-LCH	lch(35.53, 21.86, 230.50°)
OKLab	oklab(43.86% -0.055 -0.0472)
OKLCH	oklch(43.86% 0.072 220.7)
XYZ	xyz(6.8636, 8.7666, 16.0792)
Luminance	0.0877 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#155B6E #6E2815

analogous

#156E54 #155B6E #152E6E

triadic

#155B6E #6E155B #5B6E15

tetradic

#155B6E #54156E #6E2815 #2E6E15

square

#155B6E #54156E #6E2815 #2E6E15

split-complementary

#155B6E #6E152E #6E5415

monochromatic

#05151A #0B303B #155B6E #1F86A1 #29B0D5

Accessibility & contrast

On white

7.63

#155B6E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#155B6E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #155B6E

7.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##155B6E	#FFFFFF	#000000	##FFFFFF
##155B6E	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)

#50586F

Deuteranopia (green-blind)

#44506E

Tritanopia (blue-blind)

#006161

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #155b6e;
/* rgb */ color: rgb(21, 91, 110);
/* oklch */ color: oklch(43.9% 0.072 220.7);

Tailwind

colors: {
  custom: {
    50: '#638997',
    500: '#155b6e',
    950: '#000000',
  },
}

SCSS

$custom: #155b6e;
$custom-light: #638997;
$custom-dark: #000000;

JSON

{
  "hex": "#155b6e",
  "rgb": {
    "r": 21,
    "g": 91,
    "b": 110
  },
  "hsl": {
    "h": 192.809,
    "s": 67.939,
    "l": 25.686
  },
  "oklch": {
    "l": 0.43857,
    "c": 0.07245,
    "h": 220.7
  },
  "luminance": 0.08767
}

Semantic roles & 50–950 ramp

primary

#155B6E

secondary

#A4513A

accent

#623DEB

background

#F6F8F9

surface

#EBF0F2

border

#C6CBCC

text

#060B0D

muted

#7A7C7E

Preview Lab

Preview with #155B6E

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

Preview Lab → · Contrast checker → · Palette generator →