#21647F#21647F

#21647F is a mid, moderate cyan. Relative luminance 0.110; OKLCH L 47.4% C 0.079 H 228.9°. Best body text is #FFFFFF at 6.57:1 contrast (WCAG AA passes).

Color values

HEX	#21647F
RGB	rgb(33, 100, 127)
HSL	hsl(197, 59%, 31%)
HSV	hsv(197, 74%, 50%)
CMYK	cmyk(74%, 21.3%, 0%, 50.2%)
CIE-LAB	lab(39.53, -11.33, -21.12)
CIE-LCH	lch(39.53, 23.96, 241.77°)
OKLab	oklab(47.39% -0.0517 -0.0592)
OKLCH	oklch(47.39% 0.079 228.9)
XYZ	xyz(9.0136, 10.9690, 21.7167)
Luminance	0.1097 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21647F #7F3C21

analogous

#217F6B #21647F #21357F

triadic

#21647F #7F2164 #647F21

tetradic

#21647F #6B217F #7F3C21 #357F21

square

#21647F #6B217F #7F3C21 #357F21

split-complementary

#21647F #7F2135 #7F6B21

monochromatic

#08181E #143E4E #21647F #2E8AB0 #4AAAD0

Accessibility & contrast

On white

6.57

#21647F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#21647F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21647F

6.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21647F	#FFFFFF	#000000	##FFFFFF
##21647F	1.00	6.57	3.19	6.57
#FFFFFF	6.57	1.00	21.00	1.00
#000000	3.19	21.00	1.00	21.00
##FFFFFF	6.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#566280

Deuteranopia (green-blind)

#49597F

Tritanopia (blue-blind)

#006C6D

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #21647f;
/* rgb */ color: rgb(33, 100, 127);
/* oklch */ color: oklch(47.4% 0.079 228.9);

Tailwind

colors: {
  custom: {
    50: '#6a90a4',
    500: '#21647f',
    950: '#000000',
  },
}

SCSS

$custom: #21647f;
$custom-light: #6a90a4;
$custom-dark: #000000;

JSON

{
  "hex": "#21647f",
  "rgb": {
    "r": 33,
    "g": 100,
    "b": 127
  },
  "hsl": {
    "h": 197.234,
    "s": 58.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.47388,
    "c": 0.07862,
    "h": 228.9
  },
  "luminance": 0.1097
}

Semantic roles & 50–950 ramp

primary

#21647F

secondary

#B2684A

accent

#7346E2

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#070C0F

muted

#7A7D7F

Preview Lab

Preview with #21647F

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

Preview Lab → · Contrast checker → · Palette generator →