#155B7A#155B7A

#155B7A is a dark, moderate cyan. Relative luminance 0.090; OKLCH L 44.5% C 0.083 H 232.8°. Best body text is #FFFFFF at 7.47:1 contrast (WCAG AA passes).

Color values

HEX	#155B7A
RGB	rgb(21, 91, 122)
HSL	hsl(198, 71%, 28%)
HSV	hsv(198, 83%, 48%)
CMYK	cmyk(82.8%, 25.4%, 0%, 52.2%)
CIE-LAB	lab(36.07, -9.40, -23.45)
CIE-LCH	lch(36.07, 25.26, 248.15°)
OKLab	oklab(44.47% -0.0501 -0.0661)
OKLCH	oklch(44.47% 0.083 232.8)
XYZ	xyz(7.5618, 9.0458, 19.7561)
Luminance	0.0905 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#155B7A #7A3415

analogous

#157A66 #155B7A #15287A

triadic

#155B7A #7A155B #5B7A15

tetradic

#155B7A #66157A #7A3415 #287A15

square

#155B7A #66157A #7A3415 #287A15

split-complementary

#155B7A #7A1528 #7A6615

monochromatic

#04131A #0C3446 #155B7A #1E82AE #2EA6DB

Accessibility & contrast

On white

7.47

#155B7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#155B7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #155B7A

7.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##155B7A	#FFFFFF	#000000	##FFFFFF
##155B7A	1.00	7.47	2.81	7.47
#FFFFFF	7.47	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C5A7B

Deuteranopia (green-blind)

#3E517A

Tritanopia (blue-blind)

#006366

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #155b7a;
/* rgb */ color: rgb(21, 91, 122);
/* oklch */ color: oklch(44.5% 0.083 232.8);

Tailwind

colors: {
  custom: {
    50: '#6589a0',
    500: '#155b7a',
    950: '#000000',
  },
}

SCSS

$custom: #155b7a;
$custom-light: #6589a0;
$custom-dark: #000000;

JSON

{
  "hex": "#155b7a",
  "rgb": {
    "r": 21,
    "g": 91,
    "b": 122
  },
  "hsl": {
    "h": 198.416,
    "s": 70.629,
    "l": 28.039
  },
  "oklch": {
    "l": 0.4447,
    "c": 0.08294,
    "h": 232.8
  },
  "luminance": 0.09047
}

Semantic roles & 50–950 ramp

primary

#155B7A

secondary

#AF5F3B

accent

#713AED

background

#F6F8F9

surface

#EBF0F2

border

#C6CBCC

text

#060B0E

muted

#7A7C7E

Preview Lab

Preview with #155B7A

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

Preview Lab → · Contrast checker → · Palette generator →