#665B41
Closest named color: Mud (#735C12). oklch(47.5% 0.042 87.7), rgb(102, 91, 65).
Aa
White text reads best on this color (6.69:1).
About this color
#665B41 is a medium-dark, muted brown. In OKLCH its lightness is 47%, its chroma 0.042 and its hue 88°. Its hue sits on the warm side of the wheel. The nearest named color is Mud (#735C12), ΔE 0.051 away. White text reads best on it, at 6.69:1.
| Hue family | Browns |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.042) |
| Temperature | warm |
| Nearest name | Mud (#735C12) |
| Black text | 3.13:1 |
| White text | 6.69:1 |
Values
| HEX | #665B41 |
| RGB | rgb(102, 91, 65) |
| HSL | hsl(42, 22%, 33%) |
| OKLCH | oklch(47.5% 0.042 87.7) |
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 #665B41 | 6.69:1 | AA | Lc -88.1 | Fine for body text |
| Black text on #665B41 | 3.13:1 | AA large text | Lc 21.0 | Dividers and decoration only |
| #665B41 text on white | 6.69:1 | AA | Lc 83.0 | Fine for body text |
| #665B41 text on black | 3.13:1 | AA large text | Lc -18.9 | 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
#F6F5F3
oklch(97% 0.003 84.6)
-
Step 100
100
#EBEAE5
oklch(93.6% 0.007 97.4)
-
Step 200
200
#DCD9D1
oklch(88.5% 0.011 89.7)
-
Step 300
300
#C6C0B2
oklch(80.9% 0.02 87.5)
-
Step 400
400
#A9A08A
oklch(70.7% 0.033 88.4)
-
Step 500
500
#94886D
oklch(63% 0.041 86.9)
-
Step 600
600
#7E7255
oklch(55.5% 0.045 88.1)
-
Step 700
700 (this color)
#665B41
oklch(47.5% 0.042 87.7)
-
Step 800
800
#574E39
oklch(42.7% 0.035 87.5)
-
Step 900
900
#484131
oklch(37.8% 0.028 87.1)
-
Step 950
950
#2A261D
oklch(27% 0.017 86.9)
#665B41 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) | #615A3F | 0.010 |
| Deuteranopia (no green cones) | #645D42 | 0.006 |
| Tritanopia (no blue cones) | #6C5754 | 0.037 |
| Achromatopsia (no color) | #5C5C5C | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #665B41
#665B41
oklch(47.5% 0.042 87.7)
- #525C74
#525C74
oklch(47.6% 0.041 267.2)
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 #665B41, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud #735C12 ΔE 0.051
- Milk Chocolate #7F4E1E ΔE 0.056
- Olive Brown #645403 ΔE 0.057
- Dark Moss Green #606C38 ΔE 0.057
- Medium Brown #7F5112 ΔE 0.058
- Cocoa #875F42 ΔE 0.060
- Dark Taupe #7F684E ΔE 0.060
- Greeny Brown #696006 ΔE 0.060
Use #665B41 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.