#21566B#21566B

#21566B is a dark, moderate cyan. Relative luminance 0.080; OKLCH L 42.7% C 0.065 H 227.5°. Best body text is #FFFFFF at 8.05:1 contrast (WCAG AA passes).

Color values

HEX	#21566B
RGB	rgb(33, 86, 107)
HSL	hsl(197, 53%, 27%)
HSV	hsv(197, 69%, 42%)
CMYK	cmyk(69.2%, 19.6%, 0%, 58%)
CIE-LAB	lab(34.07, -10.21, -17.23)
CIE-LCH	lch(34.07, 20.02, 239.36°)
OKLab	oklab(42.74% -0.0441 -0.0482)
OKLCH	oklch(42.74% 0.065 227.5)
XYZ	xyz(6.6078, 8.0397, 15.1107)
Luminance	0.0804 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21566B #6B3621

analogous

#216B5B #21566B #21316B

triadic

#21566B #6B2156 #566B21

tetradic

#21566B #5B216B #6B3621 #316B21

square

#21566B #5B216B #6B3621 #316B21

split-complementary

#21566B #6B2131 #6B5B21

monochromatic

#071317 #13303C #21566B #2F7C9A #429FC5

Accessibility & contrast

On white

8.05

#21566B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#21566B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21566B

8.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21566B	#FFFFFF	#000000	##FFFFFF
##21566B	1.00	8.05	2.61	8.05
#FFFFFF	8.05	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B546C

Deuteranopia (green-blind)

#414D6B

Tritanopia (blue-blind)

#005C5D

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #21566b;
/* rgb */ color: rgb(33, 86, 107);
/* oklch */ color: oklch(42.7% 0.065 227.5);

Tailwind

colors: {
  custom: {
    50: '#668595',
    500: '#21566b',
    950: '#000000',
  },
}

SCSS

$custom: #21566b;
$custom-light: #668595;
$custom-dark: #000000;

JSON

{
  "hex": "#21566b",
  "rgb": {
    "r": 33,
    "g": 86,
    "b": 107
  },
  "hsl": {
    "h": 197.027,
    "s": 52.857,
    "l": 27.451
  },
  "oklch": {
    "l": 0.42735,
    "c": 0.06531,
    "h": 227.5
  },
  "luminance": 0.0804
}

Semantic roles & 50–950 ramp

primary

#21566B

secondary

#9F6149

accent

#754CDC

background

#F6F8F9

surface

#EBEFF1

border

#C6CACB

text

#060B0D

muted

#7A7C7E

Preview Lab

Preview with #21566B

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

Preview Lab → · Contrast checker → · Palette generator →