#638099#638099

#638099 is a mid, muted cyan. Relative luminance 0.204; OKLCH L 58.7% C 0.051 H 244.8°. Best body text is #000000 at 5.08:1 contrast (WCAG AA passes).

Color values

HEX	#638099
RGB	rgb(99, 128, 153)
HSL	hsl(208, 21%, 49%)
HSV	hsv(208, 35%, 60%)
CMYK	cmyk(35.3%, 16.3%, 0%, 40%)
CIE-LAB	lab(52.28, -3.94, -16.74)
CIE-LCH	lch(52.28, 17.20, 256.77°)
OKLab	oklab(58.69% -0.0216 -0.0461)
OKLCH	oklch(58.69% 0.051 244.8)
XYZ	xyz(18.6127, 20.3900, 33.0857)
Luminance	0.2039 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638099 #997C63

analogous

#639997 #638099 #636599

triadic

#638099 #996380 #809963

tetradic

#638099 #976399 #997C63 #659963

square

#638099 #976399 #997C63 #659963

split-complementary

#638099 #996365 #999763

monochromatic

#33424F #4B6174 #638099 #889EB2 #ADBCCA

Accessibility & contrast

On white

4.14

#638099 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.08

#638099 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638099

5.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638099	#FFFFFF	#000000	##000000
##638099	1.00	4.14	5.08	5.08
#FFFFFF	4.14	1.00	21.00	21.00
#000000	5.08	21.00	1.00	1.00
##000000	5.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#76809A

Deuteranopia (green-blind)

#6F7A99

Tritanopia (blue-blind)

#518688

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #638099;
/* rgb */ color: rgb(99, 128, 153);
/* oklch */ color: oklch(58.7% 0.051 244.8);

Tailwind

colors: {
  custom: {
    50: '#91a4b7',
    500: '#638099',
    950: '#000000',
  },
}

SCSS

$custom: #638099;
$custom-light: #91a4b7;
$custom-dark: #000000;

JSON

{
  "hex": "#638099",
  "rgb": {
    "r": 99,
    "g": 128,
    "b": 153
  },
  "hsl": {
    "h": 207.778,
    "s": 21.429,
    "l": 49.412
  },
  "oklch": {
    "l": 0.58688,
    "c": 0.05091,
    "h": 244.8
  },
  "luminance": 0.20391
}

Semantic roles & 50–950 ramp

primary

#638099

secondary

#B8AB9F

accent

#916ABE

background

#F9FAFB

surface

#F1F4F6

border

#CBCED0

text

#0D0F11

muted

#7E7F80

Preview Lab

Preview with #638099

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

Preview Lab → · Contrast checker → · Palette generator →