#21637D#21637D

#21637D is a mid, moderate cyan. Relative luminance 0.107; OKLCH L 47.0% C 0.077 H 228.2°. Best body text is #FFFFFF at 6.68:1 contrast (WCAG AA passes).

Color values

HEX	#21637D
RGB	rgb(33, 99, 125)
HSL	hsl(197, 58%, 31%)
HSV	hsv(197, 74%, 49%)
CMYK	cmyk(73.6%, 20.8%, 0%, 51%)
CIE-LAB	lab(39.12, -11.47, -20.54)
CIE-LCH	lch(39.12, 23.52, 240.82°)
OKLab	oklab(47.03% -0.0514 -0.0576)
OKLCH	oklch(47.03% 0.077 228.2)
XYZ	xyz(8.7892, 10.7267, 21.0053)
Luminance	0.1073 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21637D #7D3B21

analogous

#217D69 #21637D #21357D

triadic

#21637D #7D2163 #637D21

tetradic

#21637D #69217D #7D3B21 #357D21

square

#21637D #69217D #7D3B21 #357D21

split-complementary

#21637D #7D2135 #7D6921

monochromatic

#07161C #143D4D #21637D #2E89AD #49A9CF

Accessibility & contrast

On white

6.68

#21637D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#21637D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21637D

6.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21637D	#FFFFFF	#000000	##FFFFFF
##21637D	1.00	6.68	3.15	6.68
#FFFFFF	6.68	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#55617E

Deuteranopia (green-blind)

#49587D

Tritanopia (blue-blind)

#006A6C

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #21637d;
/* rgb */ color: rgb(33, 99, 125);
/* oklch */ color: oklch(47.0% 0.077 228.2);

Tailwind

colors: {
  custom: {
    50: '#6a8fa2',
    500: '#21637d',
    950: '#000000',
  },
}

SCSS

$custom: #21637d;
$custom-light: #6a8fa2;
$custom-dark: #000000;

JSON

{
  "hex": "#21637d",
  "rgb": {
    "r": 33,
    "g": 99,
    "b": 125
  },
  "hsl": {
    "h": 196.957,
    "s": 58.228,
    "l": 30.98
  },
  "oklch": {
    "l": 0.4703,
    "c": 0.07718,
    "h": 228.2
  },
  "luminance": 0.10728
}

Semantic roles & 50–950 ramp

primary

#21637D

secondary

#B0674A

accent

#7246E1

background

#F6F8FA

surface

#ECF0F3

border

#C7CBCD

text

#070C0F

muted

#7A7D7F

Preview Lab

Preview with #21637D

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

Preview Lab → · Contrast checker → · Palette generator →