#155C78#155C78

#155C78 is a dark, moderate cyan. Relative luminance 0.092; OKLCH L 44.6% C 0.080 H 229.8°. Best body text is #FFFFFF at 7.41:1 contrast (WCAG AA passes).

Color values

HEX	#155C78
RGB	rgb(21, 92, 120)
HSL	hsl(197, 70%, 28%)
HSV	hsv(197, 83%, 47%)
CMYK	cmyk(82.5%, 23.3%, 0%, 52.9%)
CIE-LAB	lab(36.31, -10.76, -21.85)
CIE-LCH	lch(36.31, 24.36, 243.77°)
OKLab	oklab(44.63% -0.0519 -0.0615)
OKLCH	oklch(44.63% 0.08 229.8)
XYZ	xyz(7.5252, 9.1689, 19.1388)
Luminance	0.0917 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#155C78 #783115

analogous

#157863 #155C78 #152A78

triadic

#155C78 #78155C #5C7815

tetradic

#155C78 #631578 #783115 #2A7815

square

#155C78 #631578 #783115 #2A7815

split-complementary

#155C78 #78152A #786315

monochromatic

#05141A #0C3444 #155C78 #1E84AC #2DA9DA

Accessibility & contrast

On white

7.41

#155C78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#155C78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #155C78

7.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##155C78	#FFFFFF	#000000	##FFFFFF
##155C78	1.00	7.41	2.83	7.41
#FFFFFF	7.41	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E5B79

Deuteranopia (green-blind)

#405178

Tritanopia (blue-blind)

#006465

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #155c78;
/* rgb */ color: rgb(21, 92, 120);
/* oklch */ color: oklch(44.6% 0.080 229.8);

Tailwind

colors: {
  custom: {
    50: '#648a9f',
    500: '#155c78',
    950: '#000000',
  },
}

SCSS

$custom: #155c78;
$custom-light: #648a9f;
$custom-dark: #000000;

JSON

{
  "hex": "#155c78",
  "rgb": {
    "r": 21,
    "g": 92,
    "b": 120
  },
  "hsl": {
    "h": 196.97,
    "s": 70.213,
    "l": 27.647
  },
  "oklch": {
    "l": 0.44626,
    "c": 0.08045,
    "h": 229.8
  },
  "luminance": 0.0917
}

Semantic roles & 50–950 ramp

primary

#155C78

secondary

#AE5C3B

accent

#6D3BED

background

#F6F8F9

surface

#EBF0F2

border

#C6CBCC

text

#060B0E

muted

#7A7C7E

Preview Lab

Preview with #155C78

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

Preview Lab → · Contrast checker → · Palette generator →