#21637F#21637F

#21637F is a mid, moderate cyan. Relative luminance 0.108; OKLCH L 47.1% C 0.079 H 230.2°. Best body text is #FFFFFF at 6.65:1 contrast (WCAG AA passes).

Color values

HEX	#21637F
RGB	rgb(33, 99, 127)
HSL	hsl(198, 59%, 31%)
HSV	hsv(198, 74%, 50%)
CMYK	cmyk(74%, 22%, 0%, 50.2%)
CIE-LAB	lab(39.20, -10.75, -21.62)
CIE-LCH	lch(39.20, 24.14, 243.57°)
OKLab	oklab(47.13% -0.0506 -0.0607)
OKLCH	oklch(47.13% 0.079 230.2)
XYZ	xyz(8.9183, 10.7783, 21.6850)
Luminance	0.1078 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21637F #7F3D21

analogous

#217F6C #21637F #21347F

triadic

#21637F #7F2163 #637F21

tetradic

#21637F #6C217F #7F3D21 #347F21

square

#21637F #6C217F #7F3D21 #347F21

split-complementary

#21637F #7F2134 #7F6C21

monochromatic

#08171E #143D4E #21637F #2E89B0 #4AA8D0

Accessibility & contrast

On white

6.65

#21637F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#21637F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21637F

6.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21637F	#FFFFFF	#000000	##FFFFFF
##21637F	1.00	6.65	3.16	6.65
#FFFFFF	6.65	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#556280

Deuteranopia (green-blind)

#48587F

Tritanopia (blue-blind)

#006B6C

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #21637f;
/* rgb */ color: rgb(33, 99, 127);
/* oklch */ color: oklch(47.1% 0.079 230.2);

Tailwind

colors: {
  custom: {
    50: '#6a8fa4',
    500: '#21637f',
    950: '#000000',
  },
}

SCSS

$custom: #21637f;
$custom-light: #6a8fa4;
$custom-dark: #000000;

JSON

{
  "hex": "#21637f",
  "rgb": {
    "r": 33,
    "g": 99,
    "b": 127
  },
  "hsl": {
    "h": 197.872,
    "s": 58.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.4713,
    "c": 0.07902,
    "h": 230.2
  },
  "luminance": 0.10779
}

Semantic roles & 50–950 ramp

primary

#21637F

secondary

#B2694A

accent

#7446E2

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#070C0F

muted

#7A7D7F

Preview Lab

Preview with #21637F

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

Preview Lab → · Contrast checker → · Palette generator →