#665B3A
Closest named color: Mud (#735C12). oklch(47.3% 0.051 91.7), rgb(102, 91, 58).
Aa
White text reads best on this color (6.72:1).
About this color
#665B3A is a medium-dark, muted brown. In OKLCH its lightness is 47%, its chroma 0.051 and its hue 92°. Its hue sits on the warm side of the wheel. The nearest named color is Mud (#735C12), ΔE 0.043 away. White text reads best on it, at 6.72:1.
| Hue family | Browns |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.051) |
| Temperature | warm |
| Nearest name | Mud (#735C12) |
| Black text | 3.12:1 |
| White text | 6.72:1 |
Values
| HEX | #665B3A |
| RGB | rgb(102, 91, 58) |
| HSL | hsl(45, 28%, 31%) |
| OKLCH | oklch(47.3% 0.051 91.7) |
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 #665B3A | 6.72:1 | AA | Lc -88.2 | Fine for body text |
| Black text on #665B3A | 3.12:1 | AA large text | Lc 20.9 | Dividers and decoration only |
| #665B3A text on white | 6.72:1 | AA | Lc 83.2 | Fine for body text |
| #665B3A text on black | 3.12:1 | AA large text | Lc -18.8 | 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
#F6F5F3
oklch(97% 0.003 84.6)
-
Step 100
100
#EBEAE5
oklch(93.6% 0.007 97.4)
-
Step 200
200
#DCD9CF
oklch(88.5% 0.014 93)
-
Step 300
300
#C6C0AF
oklch(80.8% 0.024 90.8)
-
Step 400
400
#A9A085
oklch(70.6% 0.039 91.8)
-
Step 500
500
#948967
oklch(63.1% 0.05 92.3)
-
Step 600
600
#7F734E
oklch(55.7% 0.055 92.2)
-
Step 700
700 (this color)
#665B3A
oklch(47.3% 0.051 91.7)
-
Step 800
800
#574E34
oklch(42.6% 0.042 91.2)
-
Step 900
900
#48412E
oklch(37.7% 0.032 90.2)
-
Step 950
950
#2A261B
oklch(26.9% 0.02 90.4)
#665B3A 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) | #625A38 | 0.008 |
| Deuteranopia (no green cones) | #655D3B | 0.006 |
| Tritanopia (no blue cones) | #6C5653 | 0.046 |
| Achromatopsia (no color) | #5C5C5C | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #665B3A
#665B3A
oklch(47.3% 0.051 91.7)
- #515A79
#515A79
oklch(47.2% 0.052 271.8)
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 #665B3A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud #735C12 ΔE 0.043
- Olive Brown #645403 ΔE 0.047
- Greeny Brown #696006 ΔE 0.051
- Dark Moss Green #606C38 ΔE 0.053
- Medium Brown #7F5112 ΔE 0.053
- Milk Chocolate #7F4E1E ΔE 0.053
- Camo Green #526525 ΔE 0.056
- Dark Olive Green #556B2F ΔE 0.060
Use #665B3A 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.