#666359
Closest named color: Dim Gray (#696969). oklch(49.9% 0.016 93.1), rgb(102, 99, 89).
Aa
White text reads best on this color (6.01:1).
About this color
#666359 is a medium-dark close to neutral grey. In OKLCH its lightness is 50%, its chroma 0.016. 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 (0.016) |
| Temperature | neutral |
| Nearest name | Dim Gray (#696969) |
| Black text | 3.49:1 |
| White text | 6.01:1 |
Values
| HEX | #666359 |
| RGB | rgb(102, 99, 89) |
| HSL | hsl(46, 7%, 37%) |
| OKLCH | oklch(49.9% 0.016 93.1) |
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 #666359 | 6.01:1 | AA | Lc -85.3 | Fine for body text |
| Black text on #666359 | 3.49:1 | AA large text | Lc 24.0 | Dividers and decoration only |
| #666359 text on white | 6.01:1 | AA | Lc 80.1 | Fine for body text |
| #666359 text on black | 3.49:1 | AA large text | Lc -21.8 | 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
#EAEAE8
oklch(93.6% 0.003 106.5)
-
Step 200
200
#DAD9D6
oklch(88.5% 0.004 91.5)
-
Step 300
300
#C2C0BB
oklch(80.8% 0.007 88.7)
-
Step 400
400
#A3A198
oklch(70.8% 0.013 96.5)
-
Step 500
500
#8D897F
oklch(63.1% 0.015 88.7)
-
Step 600
600
#777368
oklch(55.6% 0.017 90.3)
-
Step 700
700 (this color)
#666359
oklch(49.9% 0.016 93.1)
-
Step 800
800
#514F47
oklch(42.7% 0.013 95.4)
-
Step 900
900
#43423C
oklch(37.8% 0.01 99.1)
-
Step 950
950
#272623
oklch(26.9% 0.006 91.6)
#666359 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) | #656258 | 0.004 |
| Deuteranopia (no green cones) | #666359 | 0.000 |
| Tritanopia (no blue cones) | #686160 | 0.015 |
| Achromatopsia (no color) | #636363 | 0.016 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #666359
#666359
oklch(49.9% 0.016 93.1)
- #60636C
#60636C
oklch(50% 0.015 271.1)
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 #666359, 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 0.046
- Dark Taupe #7F684E ΔE 0.048
- Cocoa #875F42 ΔE 0.059
- Grey Brown #7F7053 ΔE 0.060
- Dark Moss Green #606C38 ΔE 0.063
- Dirt Brown #836539 ΔE 0.063
- Battleship Gray #6C757D ΔE 0.066
Use #666359 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.