#66616C
Closest named color: Dim Gray (#696969). oklch(50.1% 0.018 306.2), rgb(102, 97, 108).
Aa
White text reads best on this color (6.01:1).
About this color
#66616C is a medium-dark close to neutral grey. In OKLCH its lightness is 50%, its chroma 0.018. It has too little chroma to lean warm or cool. The nearest named color is Dim Gray (#696969), ΔE 0.027 away. White text reads best on it, at 6.01:1.
| Hue family | Neutrals |
| Lightness | medium-dark (50%) |
| Chroma | close to neutral grey (0.018) |
| Temperature | neutral |
| Nearest name | Dim Gray (#696969) |
| Black text | 3.49:1 |
| White text | 6.01:1 |
Values
| HEX | #66616C |
| RGB | rgb(102, 97, 108) |
| HSL | hsl(267, 5%, 40%) |
| OKLCH | oklch(50.1% 0.018 306.2) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #66616C | 6.01:1 | AA | Lc -85.3 | Fine for body text |
| Black text on #66616C | 3.49:1 | AA large text | Lc 24.0 | Dividers and decoration only |
| #66616C text on white | 6.01:1 | AA | Lc 80.1 | Fine for body text |
| #66616C text on black | 3.49:1 | AA large text | Lc -21.7 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 700.
-
Step 50
50
#F5F5F6
oklch(97% 0.001 286.4)
-
Step 100
100
#EAE9EB
oklch(93.5% 0.003 308.4)
-
Step 200
200
#DAD8DC
oklch(88.5% 0.006 308.4)
-
Step 300
300
#C2BFC5
oklch(80.9% 0.009 308.3)
-
Step 400
400
#A39EA8
oklch(70.7% 0.015 308.2)
-
Step 500
500
#8C8792
oklch(63.1% 0.017 306.3)
-
Step 600
600
#76717D
oklch(55.7% 0.019 304.6)
-
Step 700
700 (this color)
#66616C
oklch(50.1% 0.018 306.2)
-
Step 800
800
#514D56
oklch(42.7% 0.016 305.7)
-
Step 900
900
#434047
oklch(37.7% 0.012 305.1)
-
Step 950
950
#272629
oklch(27.1% 0.006 301.2)
#66616C with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #5F636D | 0.011 |
| Deuteranopia (no green cones) | #60636C | 0.011 |
| Tritanopia (no blue cones) | #656265 | 0.013 |
| Achromatopsia (no color) | #636363 | 0.018 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66616C
#66616C
oklch(50.1% 0.018 306.2)
- #61665A
#61665A
oklch(50.2% 0.02 125.6)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #66616C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dim Gray #696969 ΔE 0.027
- Slate #516572 ΔE 0.031
- Dusty Grape #545775 ΔE 0.048
- Battleship Gray #6C757D ΔE 0.059
- YInMn Blue #415A77 ΔE 0.063
- Dull Purple #84597E ΔE 0.065
- Metallic Blue #4F738E ΔE 0.066
- Dusty Purple #825F87 ΔE 0.067
Use #66616C in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.