#665B2B
Closest named color: Mud (#735C12). oklch(47.1% 0.068 96.7), rgb(102, 91, 43).
Aa
White text reads best on this color (6.78:1).
About this color
#665B2B is a medium-dark, muted brown. In OKLCH its lightness is 47%, its chroma 0.068 and its hue 97°. Its hue sits on the warm side of the wheel. The nearest named color is Mud (#735C12), ΔE 0.029 away. White text reads best on it, at 6.78:1.
| Hue family | Browns |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.068) |
| Temperature | warm |
| Nearest name | Mud (#735C12) |
| Black text | 3.09:1 |
| White text | 6.78:1 |
Values
| HEX | #665B2B |
| RGB | rgb(102, 91, 43) |
| HSL | hsl(49, 41%, 28%) |
| OKLCH | oklch(47.1% 0.068 96.7) |
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 #665B2B | 6.78:1 | AA | Lc -88.4 | Fine for body text |
| Black text on #665B2B | 3.09:1 | AA large text | Lc 20.7 | Dividers and decoration only |
| #665B2B text on white | 6.78:1 | AA | Lc 83.3 | Fine for body text |
| #665B2B text on black | 3.09:1 | AA large text | Lc -18.6 | 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
#F6F5F2
oklch(97% 0.004 91.4)
-
Step 100
100
#EBEAE3
oklch(93.6% 0.009 100)
-
Step 200
200
#DCD9CC
oklch(88.4% 0.018 96.1)
-
Step 300
300
#C6C1A9
oklch(80.9% 0.033 97.4)
-
Step 400
400
#AAA17B
oklch(70.7% 0.053 96.3)
-
Step 500
500
#958A5A
oklch(63.1% 0.067 96.8)
-
Step 600
600
#80733F
oklch(55.5% 0.073 95.7)
-
Step 700
700 (this color)
#665B2B
oklch(47.1% 0.068 96.7)
-
Step 800
800
#584F29
oklch(42.7% 0.057 96.4)
-
Step 900
900
#484226
oklch(37.8% 0.044 97.6)
-
Step 950
950
#2A2716
oklch(27.1% 0.029 99.4)
#665B2B 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) | #635927 | 0.009 |
| Deuteranopia (no green cones) | #665D2D | 0.006 |
| Tritanopia (no blue cones) | #6E5550 | 0.063 |
| Achromatopsia (no color) | #5B5B5B | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #665B2B
#665B2B
oklch(47.1% 0.068 96.7)
- #515781
#515781
oklch(47% 0.068 277.2)
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 #665B2B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud #735C12 ΔE 0.029
- Olive Brown #645403 ΔE 0.032
- Greeny Brown #696006 ΔE 0.034
- Camo Green #526525 ΔE 0.045
- Medium Brown #7F5112 ΔE 0.048
- Dark Moss Green #606C38 ΔE 0.048
- Mud Green #606602 ΔE 0.051
- Dark Olive Green #556B2F ΔE 0.052
Use #665B2B 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.