#637A7D#637A7D

#637A7D is a mid, muted teal. Relative luminance 0.181; OKLCH L 56.2% C 0.027 H 206.1°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#637A7D
RGB	rgb(99, 122, 125)
HSL	hsl(187, 12%, 44%)
HSV	hsv(187, 21%, 49%)
CMYK	cmyk(20.8%, 2.4%, 0%, 51%)
CIE-LAB	lab(49.56, -7.63, -4.41)
CIE-LCH	lch(49.56, 8.81, 210.07°)
OKLab	oklab(56.23% -0.0244 -0.012)
OKLCH	oklch(56.23% 0.027 206.1)
XYZ	xyz(15.8058, 18.0519, 22.0496)
Luminance	0.1805 (WCAG relative)
Temperature	neutral
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#637A7D #7D6663

analogous

#637D73 #637A7D #636D7D

triadic

#637A7D #7D637A #7A7D63

tetradic

#637A7D #73637D #7D6663 #6D7D63

square

#637A7D #73637D #7D6663 #6D7D63

split-complementary

#637A7D #7D636D #7D7363

monochromatic

#2D3739 #48595B #637A7D #82999C #A4B5B7

Accessibility & contrast

On white

4.55

#637A7D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#637A7D on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #637A7D

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##637A7D	#FFFFFF	#000000	##000000
##637A7D	1.00	4.55	4.61	4.61
#FFFFFF	4.55	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#76787D

Deuteranopia (green-blind)

#71747D

Tritanopia (blue-blind)

#5B7C7B

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #637a7d;
/* rgb */ color: rgb(99, 122, 125);
/* oklch */ color: oklch(56.2% 0.027 206.1);

Tailwind

colors: {
  custom: {
    50: '#90a0a2',
    500: '#637a7d',
    950: '#000000',
  },
}

SCSS

$custom: #637a7d;
$custom-light: #90a0a2;
$custom-dark: #000000;

JSON

{
  "hex": "#637a7d",
  "rgb": {
    "r": 99,
    "g": 122,
    "b": 125
  },
  "hsl": {
    "h": 186.923,
    "s": 11.607,
    "l": 43.922
  },
  "oklch": {
    "l": 0.56226,
    "c": 0.02721,
    "h": 206.1
  },
  "luminance": 0.18052
}

Semantic roles & 50–950 ramp

primary

#637A7D

secondary

#A69896

accent

#7B73B5

background

#F8F9F9

surface

#F0F2F2

border

#CBCCCC

text

#0C0E0F

muted

#7D7E7E

Preview Lab

Preview with #637A7D

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

Preview Lab → · Contrast checker → · Palette generator →