#21536B#21536B

#21536B is a dark, moderate cyan. Relative luminance 0.076; OKLCH L 41.9% C 0.066 H 232.3°. Best body text is #FFFFFF at 8.35:1 contrast (WCAG AA passes).

Color values

HEX	#21536B
RGB	rgb(33, 83, 107)
HSL	hsl(199, 53%, 27%)
HSV	hsv(199, 69%, 42%)
CMYK	cmyk(69.2%, 22.4%, 0%, 58%)
CIE-LAB	lab(33.07, -8.39, -18.76)
CIE-LCH	lch(33.07, 20.55, 245.91°)
OKLab	oklab(41.94% -0.0406 -0.0526)
OKLCH	oklch(41.94% 0.066 232.3)
XYZ	xyz(6.3733, 7.5707, 15.0325)
Luminance	0.0757 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21536B #6B3921

analogous

#216B5E #21536B #212E6B

triadic

#21536B #6B2153 #536B21

tetradic

#21536B #5E216B #6B3921 #2E6B21

square

#21536B #5E216B #6B3921 #2E6B21

split-complementary

#21536B #6B212E #6B5E21

monochromatic

#071217 #132F3C #21536B #2F779A #429AC5

Accessibility & contrast

On white

8.35

#21536B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#21536B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21536B

8.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21536B	#FFFFFF	#000000	##FFFFFF
##21536B	1.00	8.35	2.51	8.35
#FFFFFF	8.35	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#47526C

Deuteranopia (green-blind)

#3D4A6B

Tritanopia (blue-blind)

#00595B

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #21536b;
/* rgb */ color: rgb(33, 83, 107);
/* oklch */ color: oklch(41.9% 0.066 232.3);

Tailwind

colors: {
  custom: {
    50: '#668395',
    500: '#21536b',
    950: '#000000',
  },
}

SCSS

$custom: #21536b;
$custom-light: #668395;
$custom-dark: #000000;

JSON

{
  "hex": "#21536b",
  "rgb": {
    "r": 33,
    "g": 83,
    "b": 107
  },
  "hsl": {
    "h": 199.459,
    "s": 52.857,
    "l": 27.451
  },
  "oklch": {
    "l": 0.41943,
    "c": 0.06644,
    "h": 232.3
  },
  "luminance": 0.07571
}

Semantic roles & 50–950 ramp

primary

#21536B

secondary

#9F6549

accent

#7A4CDC

background

#F6F8F9

surface

#EBEFF1

border

#C6CACB

text

#060A0D

muted

#7A7C7E

Preview Lab

Preview with #21536B

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

Preview Lab → · Contrast checker → · Palette generator →