#665B57
Closest named color: Dim Gray (#696969). oklch(48% 0.016 41.1), rgb(102, 91, 87).
Aa
White text reads best on this color (6.56:1).
About this color
#665B57 is a medium-dark close to neutral grey. In OKLCH its lightness is 48%, its chroma 0.016. It has too little chroma to lean warm or cool. The nearest named color is Dim Gray (#696969), ΔE 0.043 away. White text reads best on it, at 6.56:1.
| Hue family | Neutrals |
| Lightness | medium-dark (48%) |
| Chroma | close to neutral grey (0.016) |
| Temperature | neutral |
| Nearest name | Dim Gray (#696969) |
| Black text | 3.19:1 |
| White text | 6.56:1 |
Values
| HEX | #665B57 |
| RGB | rgb(102, 91, 87) |
| HSL | hsl(16, 8%, 37%) |
| OKLCH | oklch(48% 0.016 41.1) |
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 #665B57 | 6.56:1 | AA | Lc -87.6 | Fine for body text |
| Black text on #665B57 | 3.19:1 | AA large text | Lc 21.5 | Dividers and decoration only |
| #665B57 text on white | 6.56:1 | AA | Lc 82.5 | Fine for body text |
| #665B57 text on black | 3.19:1 | AA large text | Lc -19.4 | 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
#F6F5F5
oklch(97.1% 0.001 17.2)
-
Step 100
100
#EBE9E9
oklch(93.6% 0.002 17.2)
-
Step 200
200
#DCD8D7
oklch(88.5% 0.005 34.3)
-
Step 300
300
#C5BFBD
oklch(80.9% 0.007 39.5)
-
Step 400
400
#A89E9B
oklch(70.7% 0.013 37.4)
-
Step 500
500
#928782
oklch(63.2% 0.015 46.1)
-
Step 600
600
#7D706C
oklch(55.6% 0.017 37.8)
-
Step 700
700 (this color)
#665B57
oklch(48% 0.016 41.1)
-
Step 800
800
#564D4A
oklch(42.8% 0.013 39.3)
-
Step 900
900
#47403D
oklch(37.8% 0.011 44.7)
-
Step 950
950
#292524
oklch(26.8% 0.006 34.3)
#665B57 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) | #5E5C57 | 0.013 |
| Deuteranopia (no green cones) | #605E57 | 0.013 |
| Tritanopia (no blue cones) | #69595A | 0.010 |
| Achromatopsia (no color) | #5D5D5D | 0.016 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #665B57
#665B57
oklch(48% 0.016 41.1)
- #546064
#546064
oklch(48% 0.016 219.8)
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 #665B57, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dim Gray #696969 ΔE 0.043
- Slate #516572 ΔE 0.049
- Dusty Grape #545775 ΔE 0.060
- Dark Taupe #7F684E ΔE 0.063
- Cocoa #875F42 ΔE 0.066
- Brownish Purple #76424E ΔE 0.070
- YInMn Blue #415A77 ΔE 0.073
- Dark Mauve #874C62 ΔE 0.075
Use #665B57 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.