#666A7C#666A7C

#666A7C is a mid, muted blue. Relative luminance 0.146; OKLCH L 52.7% C 0.029 H 275.5°. Best body text is #FFFFFF at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#666A7C
RGB	rgb(102, 106, 124)
HSL	hsl(229, 10%, 44%)
HSV	hsv(229, 18%, 49%)
CMYK	cmyk(17.7%, 14.5%, 0%, 51.4%)
CIE-LAB	lab(45.06, 2.54, -10.51)
CIE-LCH	lch(45.06, 10.81, 283.60°)
OKLab	oklab(52.73% 0.0027 -0.0285)
OKLCH	oklch(52.73% 0.029 275.5)
XYZ	xyz(14.2708, 14.5879, 21.1288)
Luminance	0.1459 (WCAG relative)
Temperature	neutral
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666A7C #7C7866

analogous

#66757C #666A7C #6D667C

triadic

#666A7C #7C666A #6A7C66

tetradic

#666A7C #7C6675 #7C7866 #667C6D

square

#666A7C #7C6675 #7C7866 #667C6D

split-complementary

#666A7C #7C6D66 #757C66

monochromatic

#2F3139 #4A4D5A #666A7C #85899A #A6A9B6

Accessibility & contrast

On white

5.36

#666A7C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.92

#666A7C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666A7C

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666A7C	#FFFFFF	#000000	##FFFFFF
##666A7C	1.00	5.36	3.92	5.36
#FFFFFF	5.36	1.00	21.00	1.00
#000000	3.92	21.00	1.00	21.00
##FFFFFF	5.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#656C7D

Deuteranopia (green-blind)

#646A7C

Tritanopia (blue-blind)

#616D70

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #666a7c;
/* rgb */ color: rgb(102, 106, 124);
/* oklch */ color: oklch(52.7% 0.029 275.5);

Tailwind

colors: {
  custom: {
    50: '#9194a2',
    500: '#666a7c',
    950: '#000000',
  },
}

SCSS

$custom: #666a7c;
$custom-light: #9194a2;
$custom-dark: #000000;

JSON

{
  "hex": "#666a7c",
  "rgb": {
    "r": 102,
    "g": 106,
    "b": 124
  },
  "hsl": {
    "h": 229.091,
    "s": 9.735,
    "l": 44.314
  },
  "oklch": {
    "l": 0.52732,
    "c": 0.02865,
    "h": 275.5
  },
  "luminance": 0.14588
}

Semantic roles & 50–950 ramp

primary

#666A7C

secondary

#A5A398

accent

#A875B3

background

#F8F9F9

surface

#F0F1F2

border

#CBCBCC

text

#0D0D0F

muted

#7D7E7E

Preview Lab

Preview with #666A7C

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

Preview Lab → · Contrast checker → · Palette generator →