#647E99#647E99

#647E99 is a mid, muted cyan. Relative luminance 0.199; OKLCH L 58.3% C 0.051 H 249.7°. Best body text is #000000 at 4.99:1 contrast (WCAG AA passes).

Color values

HEX	#647E99
RGB	rgb(100, 126, 153)
HSL	hsl(211, 21%, 50%)
HSV	hsv(211, 35%, 60%)
CMYK	cmyk(34.6%, 17.6%, 0%, 40%)
CIE-LAB	lab(51.76, -2.48, -17.53)
CIE-LCH	lch(51.76, 17.70, 261.94°)
OKLab	oklab(58.3% -0.0179 -0.0483)
OKLCH	oklch(58.3% 0.051 249.7)
XYZ	xyz(18.4644, 19.9301, 33.0048)
Luminance	0.1993 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647E99 #997F64

analogous

#649999 #647E99 #646499

triadic

#647E99 #99647E #7E9964

tetradic

#647E99 #996499 #997F64 #649964

square

#647E99 #996499 #997F64 #649964

split-complementary

#647E99 #996464 #999964

monochromatic

#34414F #4C6074 #647E99 #899DB2 #AEBBCA

Accessibility & contrast

On white

4.21

#647E99 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.99

#647E99 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647E99

4.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647E99	#FFFFFF	#000000	##000000
##647E99	1.00	4.21	4.99	4.99
#FFFFFF	4.21	1.00	21.00	21.00
#000000	4.99	21.00	1.00	1.00
##000000	4.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#747E9A

Deuteranopia (green-blind)

#6D7998

Tritanopia (blue-blind)

#538487

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #647e99;
/* rgb */ color: rgb(100, 126, 153);
/* oklch */ color: oklch(58.3% 0.051 249.7);

Tailwind

colors: {
  custom: {
    50: '#92a3b7',
    500: '#647e99',
    950: '#000000',
  },
}

SCSS

$custom: #647e99;
$custom-light: #92a3b7;
$custom-dark: #000000;

JSON

{
  "hex": "#647e99",
  "rgb": {
    "r": 100,
    "g": 126,
    "b": 153
  },
  "hsl": {
    "h": 210.566,
    "s": 20.949,
    "l": 49.608
  },
  "oklch": {
    "l": 0.58297,
    "c": 0.05146,
    "h": 249.7
  },
  "luminance": 0.19931
}

Semantic roles & 50–950 ramp

primary

#647E99

secondary

#B9ADA0

accent

#956ABE

background

#F9FAFB

surface

#F1F3F6

border

#CBCDD0

text

#0D0F11

muted

#7E7F80

Preview Lab

Preview with #647E99

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

Preview Lab → · Contrast checker → · Palette generator →