#15566F#15566F

#15566F is a dark, moderate cyan. Relative luminance 0.080; OKLCH L 42.6% C 0.075 H 228.8°. Best body text is #FFFFFF at 8.10:1 contrast (WCAG AA passes).

Color values

HEX	#15566F
RGB	rgb(21, 86, 111)
HSL	hsl(197, 68%, 26%)
HSV	hsv(197, 81%, 44%)
CMYK	cmyk(81.1%, 22.5%, 0%, 56.5%)
CIE-LAB	lab(33.90, -10.58, -20.00)
CIE-LCH	lch(33.90, 22.63, 242.13°)
OKLab	oklab(42.57% -0.0492 -0.0562)
OKLCH	oklch(42.57% 0.075 228.8)
XYZ	xyz(6.5051, 7.9619, 16.2298)
Luminance	0.0796 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15566F #6F2E15

analogous

#156F5B #15566F #15296F

triadic

#15566F #6F1556 #566F15

tetradic

#15566F #5B156F #6F2E15 #296F15

square

#15566F #5B156F #6F2E15 #296F15

split-complementary

#15566F #6F1529 #6F5B15

monochromatic

#05141A #0B2E3C #15566F #1F7EA2 #28A6D6

Accessibility & contrast

On white

8.10

#15566F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#15566F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15566F

8.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15566F	#FFFFFF	#000000	##FFFFFF
##15566F	1.00	8.10	2.59	8.10
#FFFFFF	8.10	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#495570

Deuteranopia (green-blind)

#3D4C6F

Tritanopia (blue-blind)

#005D5E

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #15566f;
/* rgb */ color: rgb(21, 86, 111);
/* oklch */ color: oklch(42.6% 0.075 228.8);

Tailwind

colors: {
  custom: {
    50: '#628598',
    500: '#15566f',
    950: '#000000',
  },
}

SCSS

$custom: #15566f;
$custom-light: #628598;
$custom-dark: #000000;

JSON

{
  "hex": "#15566f",
  "rgb": {
    "r": 21,
    "g": 86,
    "b": 111
  },
  "hsl": {
    "h": 196.667,
    "s": 68.182,
    "l": 25.882
  },
  "oklch": {
    "l": 0.42567,
    "c": 0.07472,
    "h": 228.8
  },
  "luminance": 0.07963
}

Semantic roles & 50–950 ramp

primary

#15566F

secondary

#A5583A

accent

#6D3DEB

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#060B0D

muted

#7A7C7E

Preview Lab

Preview with #15566F

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

Preview Lab → · Contrast checker → · Palette generator →