#66634F
Closest named color: Dim Gray (#696969). oklch(49.7% 0.031 100.3), rgb(102, 99, 79).
Aa
White text reads best on this color (6.06:1).
About this color
#66634F is a medium-dark, muted brown. In OKLCH its lightness is 50%, its chroma 0.031 and its hue 100°. Its hue sits on the warm side of the wheel. The nearest named color is Dim Gray (#696969), ΔE 0.039 away. White text reads best on it, at 6.06:1.
| Hue family | Browns |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.031) |
| Temperature | warm |
| Nearest name | Dim Gray (#696969) |
| Black text | 3.46:1 |
| White text | 6.06:1 |
Values
| HEX | #66634F |
| RGB | rgb(102, 99, 79) |
| HSL | hsl(52, 13%, 35%) |
| OKLCH | oklch(49.7% 0.031 100.3) |
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 #66634F | 6.06:1 | AA | Lc -85.5 | Fine for body text |
| Black text on #66634F | 3.46:1 | AA large text | Lc 23.7 | Dividers and decoration only |
| #66634F text on white | 6.06:1 | AA | Lc 80.3 | Fine for body text |
| #66634F text on black | 3.46:1 | AA large text | Lc -21.5 | 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
#DAD9D3
oklch(88.4% 0.008 98.9)
-
Step 300
300
#C2C1B6
oklch(80.9% 0.015 102.5)
-
Step 400
400
#A4A191
oklch(70.7% 0.023 98.2)
-
Step 500
500
#8D8A75
oklch(63% 0.031 100.5)
-
Step 600
600
#77745E
oklch(55.5% 0.033 101)
-
Step 700
700 (this color)
#66634F
oklch(49.7% 0.031 100.3)
-
Step 800
800
#525040
oklch(42.8% 0.025 101.5)
-
Step 900
900
#444236
oklch(37.7% 0.02 99.4)
-
Step 950
950
#282720
oklch(27.1% 0.013 100.5)
#66634F 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) | #67624E | 0.003 |
| Deuteranopia (no green cones) | #686350 | 0.004 |
| Tritanopia (no blue cones) | #6A605D | 0.027 |
| Achromatopsia (no color) | #626262 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66634F
#66634F
oklch(49.7% 0.031 100.3)
- #5F6174
#5F6174
oklch(49.8% 0.03 280.5)
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 #66634F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dim Gray #696969 ΔE 0.039
- Dark Taupe #7F684E ΔE 0.045
- Dark Moss Green #606C38 ΔE 0.050
- Dirt Brown #836539 ΔE 0.055
- Cocoa #875F42 ΔE 0.055
- Grey Brown #7F7053 ΔE 0.058
- Slate #516572 ΔE 0.058
- Mud #735C12 ΔE 0.063
Use #66634F 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.