#155B78#155B78

#155B78 is a dark, moderate cyan. Relative luminance 0.090; OKLCH L 44.4% C 0.081 H 231.1°. Best body text is #FFFFFF at 7.50:1 contrast (WCAG AA passes).

Color values

HEX	#155B78
RGB	rgb(21, 91, 120)
HSL	hsl(198, 70%, 28%)
HSV	hsv(198, 83%, 47%)
CMYK	cmyk(82.5%, 24.2%, 0%, 52.9%)
CIE-LAB	lab(35.98, -10.17, -22.36)
CIE-LCH	lch(35.98, 24.56, 245.55°)
OKLab	oklab(44.36% -0.0509 -0.063)
OKLCH	oklch(44.36% 0.081 231.1)
XYZ	xyz(7.4391, 8.9968, 19.1101)
Luminance	0.0900 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#155B78 #783215

analogous

#157864 #155B78 #152978

triadic

#155B78 #78155B #5B7815

tetradic

#155B78 #641578 #783215 #297815

square

#155B78 #641578 #783215 #297815

split-complementary

#155B78 #781529 #786415

monochromatic

#05141A #0C3444 #155B78 #1E82AC #2DA8DA

Accessibility & contrast

On white

7.50

#155B78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.80

#155B78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #155B78

7.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##155B78	#FFFFFF	#000000	##FFFFFF
##155B78	1.00	7.50	2.80	7.50
#FFFFFF	7.50	1.00	21.00	1.00
#000000	2.80	21.00	1.00	21.00
##FFFFFF	7.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C5A79

Deuteranopia (green-blind)

#3F5178

Tritanopia (blue-blind)

#006365

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #155b78;
/* rgb */ color: rgb(21, 91, 120);
/* oklch */ color: oklch(44.4% 0.081 231.1);

Tailwind

colors: {
  custom: {
    50: '#64899f',
    500: '#155b78',
    950: '#000000',
  },
}

SCSS

$custom: #155b78;
$custom-light: #64899f;
$custom-dark: #000000;

JSON

{
  "hex": "#155b78",
  "rgb": {
    "r": 21,
    "g": 91,
    "b": 120
  },
  "hsl": {
    "h": 197.576,
    "s": 70.213,
    "l": 27.647
  },
  "oklch": {
    "l": 0.44363,
    "c": 0.08094,
    "h": 231.1
  },
  "luminance": 0.08998
}

Semantic roles & 50–950 ramp

primary

#155B78

secondary

#AE5D3B

accent

#6F3BED

background

#F6F8F9

surface

#EBF0F2

border

#C6CBCC

text

#060B0E

muted

#7A7C7E

Preview Lab

Preview with #155B78

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

Preview Lab → · Contrast checker → · Palette generator →