#666E7A#666E7A

#666E7A is a mid, muted blue. Relative luminance 0.154; OKLCH L 53.6% C 0.021 H 258.4°. Best body text is #FFFFFF at 5.15:1 contrast (WCAG AA passes).

Color values

HEX	#666E7A
RGB	rgb(102, 110, 122)
HSL	hsl(216, 9%, 44%)
HSV	hsv(216, 16%, 48%)
CMYK	cmyk(16.4%, 9.8%, 0%, 52.2%)
CIE-LAB	lab(46.15, -0.32, -7.67)
CIE-LCH	lch(46.15, 7.68, 267.62°)
OKLab	oklab(53.56% -0.0043 -0.0207)
OKLCH	oklch(53.56% 0.021 258.4)
XYZ	xyz(14.5674, 15.3815, 20.6100)
Luminance	0.1538 (WCAG relative)
Temperature	neutral
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666E7A #7A7266

analogous

#66787A #666E7A #68667A

triadic

#666E7A #7A666E #6E7A66

tetradic

#666E7A #7A6678 #7A7266 #667A68

square

#666E7A #7A6678 #7A7266 #667A68

split-complementary

#666E7A #7A6866 #787A66

monochromatic

#2E3237 #4A5059 #666E7A #858D99 #A6ACB5

Accessibility & contrast

On white

5.15

#666E7A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.08

#666E7A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666E7A

5.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666E7A	#FFFFFF	#000000	##FFFFFF
##666E7A	1.00	5.15	4.08	5.15
#FFFFFF	5.15	1.00	21.00	1.00
#000000	4.08	21.00	1.00	21.00
##FFFFFF	5.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A6E7B

Deuteranopia (green-blind)

#686C7A

Tritanopia (blue-blind)

#617072

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #666e7a;
/* rgb */ color: rgb(102, 110, 122);
/* oklch */ color: oklch(53.6% 0.021 258.4);

Tailwind

colors: {
  custom: {
    50: '#9197a0',
    500: '#666e7a',
    950: '#000000',
  },
}

SCSS

$custom: #666e7a;
$custom-light: #9197a0;
$custom-dark: #000000;

JSON

{
  "hex": "#666e7a",
  "rgb": {
    "r": 102,
    "g": 110,
    "b": 122
  },
  "hsl": {
    "h": 216,
    "s": 8.929,
    "l": 43.922
  },
  "oklch": {
    "l": 0.53562,
    "c": 0.02118,
    "h": 258.4
  },
  "luminance": 0.15382
}

Semantic roles & 50–950 ramp

primary

#666E7A

secondary

#A49F98

accent

#9A76B2

background

#F8F9F9

surface

#F0F2F2

border

#CBCCCC

text

#0D0D0E

muted

#7D7E7E

Preview Lab

Preview with #666E7A

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

Preview Lab → · Contrast checker → · Palette generator →