#21687B#21687B

#21687B is a mid, moderate cyan. Relative luminance 0.117; OKLCH L 48.2% C 0.075 H 219.3°. Best body text is #FFFFFF at 6.30:1 contrast (WCAG AA passes).

Color values

HEX	#21687B
RGB	rgb(33, 104, 123)
HSL	hsl(193, 58%, 31%)
HSV	hsv(193, 73%, 48%)
CMYK	cmyk(73.2%, 15.4%, 0%, 51.8%)
CIE-LAB	lab(40.66, -15.05, -16.94)
CIE-LCH	lch(40.66, 22.67, 228.38°)
OKLab	oklab(48.24% -0.0577 -0.0473)
OKLCH	oklch(48.24% 0.075 219.3)
XYZ	xyz(9.1512, 11.6530, 20.5020)
Luminance	0.1165 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21687B #7B3421

analogous

#217B61 #21687B #213B7B

triadic

#21687B #7B2168 #687B21

tetradic

#21687B #61217B #7B3421 #3B7B21

square

#21687B #61217B #7B3421 #3B7B21

split-complementary

#21687B #7B213B #7B6121

monochromatic

#07161A #143F4B #21687B #2E91AB #48B2CE

Accessibility & contrast

On white

6.30

#21687B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.33

#21687B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21687B

6.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21687B	#FFFFFF	#000000	##FFFFFF
##21687B	1.00	6.30	3.33	6.30
#FFFFFF	6.30	1.00	21.00	1.00
#000000	3.33	21.00	1.00	21.00
##FFFFFF	6.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C657C

Deuteranopia (green-blind)

#505C7B

Tritanopia (blue-blind)

#006E6E

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #21687b;
/* rgb */ color: rgb(33, 104, 123);
/* oklch */ color: oklch(48.2% 0.075 219.3);

Tailwind

colors: {
  custom: {
    50: '#6a93a1',
    500: '#21687b',
    950: '#000000',
  },
}

SCSS

$custom: #21687b;
$custom-light: #6a93a1;
$custom-dark: #000000;

JSON

{
  "hex": "#21687b",
  "rgb": {
    "r": 33,
    "g": 104,
    "b": 123
  },
  "hsl": {
    "h": 192.667,
    "s": 57.692,
    "l": 30.588
  },
  "oklch": {
    "l": 0.48238,
    "c": 0.0746,
    "h": 219.3
  },
  "luminance": 0.11654
}

Semantic roles & 50–950 ramp

primary

#21687B

secondary

#AE5F4A

accent

#6747E1

background

#F6F9F9

surface

#ECF1F2

border

#C7CBCC

text

#070D0F

muted

#7A7E7E

Preview Lab

Preview with #21687B

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

Preview Lab → · Contrast checker → · Palette generator →