#666151
Closest named color: Dim Gray (#696969). oklch(49.2% 0.025 92.7), rgb(102, 97, 81).
Aa
White text reads best on this color (6.18:1).
About this color
#666151 is a medium-dark close to neutral grey. In OKLCH its lightness is 49%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Dim Gray (#696969), ΔE 0.038 away. White text reads best on it, at 6.18:1.
| Hue family | Neutrals |
| Lightness | medium-dark (49%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Dim Gray (#696969) |
| Black text | 3.39:1 |
| White text | 6.18:1 |
Values
| HEX | #666151 |
| RGB | rgb(102, 97, 81) |
| HSL | hsl(46, 11%, 36%) |
| OKLCH | oklch(49.2% 0.025 92.7) |
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 #666151 | 6.18:1 | AA | Lc -86.0 | Fine for body text |
| Black text on #666151 | 3.39:1 | AA large text | Lc 23.2 | Dividers and decoration only |
| #666151 text on white | 6.18:1 | AA | Lc 80.9 | Fine for body text |
| #666151 text on black | 3.39:1 | AA large text | Lc -21.0 | 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
#F6F5F4
oklch(97.1% 0.002 67.8)
-
Step 100
100
#EAEAE7
oklch(93.6% 0.004 106.5)
-
Step 200
200
#DAD9D4
oklch(88.5% 0.007 97.4)
-
Step 300
300
#C3C0B8
oklch(80.8% 0.012 89.7)
-
Step 400
400
#A5A093
oklch(70.6% 0.019 89.4)
-
Step 500
500
#8F8979
oklch(63.1% 0.024 89.9)
-
Step 600
600
#797361
oklch(55.6% 0.028 91.8)
-
Step 700
700 (this color)
#666151
oklch(49.2% 0.025 92.7)
-
Step 800
800
#534F42
oklch(42.7% 0.021 92.9)
-
Step 900
900
#444138
oklch(37.5% 0.015 91.7)
-
Step 950
950
#282621
oklch(26.9% 0.009 88.8)
#666151 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) | #656050 | 0.004 |
| Deuteranopia (no green cones) | #666251 | 0.003 |
| Tritanopia (no blue cones) | #6A5E5D | 0.025 |
| Achromatopsia (no color) | #616161 | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #666151
#666151
oklch(49.2% 0.025 92.7)
- #5C6070
#5C6070
oklch(49.1% 0.026 274.3)
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 #666151, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dim Gray #696969 ΔE 0.038
- Dark Taupe #7F684E ΔE 0.048
- Slate #516572 ΔE 0.055
- Cocoa #875F42 ΔE 0.057
- Dark Moss Green #606C38 ΔE 0.057
- Dirt Brown #836539 ΔE 0.059
- Grey Brown #7F7053 ΔE 0.063
- Mud #735C12 ΔE 0.067
Use #666151 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.