#638697#638697

#638697 is a mid, muted cyan. Relative luminance 0.219; OKLCH L 60.0% C 0.047 H 229.4°. Best body text is #000000 at 5.39:1 contrast (WCAG AA passes).

Color values

HEX	#638697
RGB	rgb(99, 134, 151)
HSL	hsl(200, 21%, 49%)
HSV	hsv(200, 34%, 59%)
CMYK	cmyk(34.4%, 11.3%, 0%, 40.8%)
CIE-LAB	lab(53.96, -7.89, -13.03)
CIE-LCH	lch(53.96, 15.23, 238.79°)
OKLab	oklab(60% -0.0306 -0.0357)
OKLCH	oklch(60% 0.047 229.4)
XYZ	xyz(19.2548, 21.9362, 32.4917)
Luminance	0.2194 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638697 #977463

analogous

#63978E #638697 #636C97

triadic

#638697 #976386 #869763

tetradic

#638697 #8E6397 #977463 #6C9763

square

#638697 #8E6397 #977463 #6C9763

split-complementary

#638697 #97636C #978E63

monochromatic

#33444D #4B6572 #638697 #87A3B0 #ACBFC9

Accessibility & contrast

On white

3.90

#638697 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.39

#638697 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638697

5.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638697	#FFFFFF	#000000	##000000
##638697	1.00	3.90	5.39	5.39
#FFFFFF	3.90	1.00	21.00	21.00
#000000	5.39	21.00	1.00	1.00
##000000	5.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7D8498

Deuteranopia (green-blind)

#767E97

Tritanopia (blue-blind)

#518B8B

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #638697;
/* rgb */ color: rgb(99, 134, 151);
/* oklch */ color: oklch(60.0% 0.047 229.4);

Tailwind

colors: {
  custom: {
    50: '#91a9b5',
    500: '#638697',
    950: '#000000',
  },
}

SCSS

$custom: #638697;
$custom-light: #91a9b5;
$custom-dark: #000000;

JSON

{
  "hex": "#638697",
  "rgb": {
    "r": 99,
    "g": 134,
    "b": 151
  },
  "hsl": {
    "h": 199.615,
    "s": 20.8,
    "l": 49.02
  },
  "oklch": {
    "l": 0.59995,
    "c": 0.04705,
    "h": 229.4
  },
  "luminance": 0.21937
}

Semantic roles & 50–950 ramp

primary

#638697

secondary

#B7A79F

accent

#866ABD

background

#F9FAFB

surface

#F1F4F6

border

#CBCED0

text

#0D0F11

muted

#7E7F80

Preview Lab

Preview with #638697

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

Preview Lab → · Contrast checker → · Palette generator →