#155A7A#155A7A

#155A7A is a dark, moderate cyan. Relative luminance 0.089; OKLCH L 44.2% C 0.084 H 234.0°. Best body text is #FFFFFF at 7.57:1 contrast (WCAG AA passes).

Color values

HEX	#155A7A
RGB	rgb(21, 90, 122)
HSL	hsl(199, 71%, 28%)
HSV	hsv(199, 83%, 48%)
CMYK	cmyk(82.8%, 26.2%, 0%, 52.2%)
CIE-LAB	lab(35.74, -8.80, -23.96)
CIE-LCH	lch(35.74, 25.52, 249.83°)
OKLab	oklab(44.21% -0.0491 -0.0676)
OKLCH	oklch(44.21% 0.084 234)
XYZ	xyz(7.4769, 8.8760, 19.7278)
Luminance	0.0888 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#155A7A #7A3515

analogous

#157A67 #155A7A #15277A

triadic

#155A7A #7A155A #5A7A15

tetradic

#155A7A #67157A #7A3515 #277A15

square

#155A7A #67157A #7A3515 #277A15

split-complementary

#155A7A #7A1527 #7A6715

monochromatic

#04131A #0C3346 #155A7A #1E81AE #2EA4DB

Accessibility & contrast

On white

7.57

#155A7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#155A7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #155A7A

7.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##155A7A	#FFFFFF	#000000	##FFFFFF
##155A7A	1.00	7.57	2.78	7.57
#FFFFFF	7.57	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A597B

Deuteranopia (green-blind)

#3D5079

Tritanopia (blue-blind)

#006265

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #155a7a;
/* rgb */ color: rgb(21, 90, 122);
/* oklch */ color: oklch(44.2% 0.084 234.0);

Tailwind

colors: {
  custom: {
    50: '#6588a0',
    500: '#155a7a',
    950: '#000000',
  },
}

SCSS

$custom: #155a7a;
$custom-light: #6588a0;
$custom-dark: #000000;

JSON

{
  "hex": "#155a7a",
  "rgb": {
    "r": 21,
    "g": 90,
    "b": 122
  },
  "hsl": {
    "h": 199.01,
    "s": 70.629,
    "l": 28.039
  },
  "oklch": {
    "l": 0.44208,
    "c": 0.08353,
    "h": 234
  },
  "luminance": 0.08877
}

Semantic roles & 50–950 ramp

primary

#155A7A

secondary

#AF603B

accent

#733AED

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#060B0E

muted

#7A7C7E

Preview Lab

Preview with #155A7A

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

Preview Lab → · Contrast checker → · Palette generator →