#66451E
Closest named color: Mud Brown (#60460F). oklch(41.9% 0.071 68.2), rgb(102, 69, 30).
Aa
White text reads best on this color (8.62:1).
About this color
#66451E is a dark, moderately saturated brown. In OKLCH its lightness is 42%, its chroma 0.071 and its hue 68°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.019 away. White text reads best on it, at 8.62:1.
| Hue family | Browns |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.071) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.43:1 |
| White text | 8.62:1 |
Values
| HEX | #66451E |
| RGB | rgb(102, 69, 30) |
| HSL | hsl(33, 55%, 26%) |
| OKLCH | oklch(41.9% 0.071 68.2) |
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 #66451E | 8.62:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #66451E | 2.43:1 | Fails | Lc 14.5 | Not readable |
| #66451E text on white | 8.62:1 | AAA | Lc 89.5 | Fine for body text |
| #66451E text on black | 2.43:1 | Fails | Lc -12.8 | Not readable |
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 800.
-
Step 50
50
#F8F5F2
oklch(97.2% 0.005 67.8)
-
Step 100
100
#EFE9E2
oklch(93.7% 0.011 71.9)
-
Step 200
200
#E4D7C9
oklch(88.6% 0.024 69.6)
-
Step 300
300
#D3BCA5
oklch(80.9% 0.041 67.2)
-
Step 400
400
#BC9974
oklch(70.6% 0.066 68)
-
Step 500
500
#AB804F
oklch(63.1% 0.084 68.9)
-
Step 600
600
#966833
oklch(55.5% 0.091 67.8)
-
Step 700
700
#805725
oklch(49.1% 0.085 68.7)
-
Step 800
800 (this color)
#66451E
oklch(41.9% 0.071 68.2)
-
Step 900
900
#553C20
oklch(37.8% 0.055 68)
-
Step 950
950
#322313
oklch(27% 0.035 67.2)
#66451E 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) | #50471A | 0.042 |
| Deuteranopia (no green cones) | #584F1F | 0.037 |
| Tritanopia (no blue cones) | #6F3D3C | 0.056 |
| Achromatopsia (no color) | #4C4C4C | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66451E
#66451E
oklch(41.9% 0.071 68.2)
- #2B5072
#2B5072
oklch(42% 0.071 248)
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 #66451E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.019
- Green Brown #544E03 ΔE 0.051
- Olive Brown #645403 ΔE 0.053
- Milk Chocolate #7F4E1E ΔE 0.056
- Medium Brown #7F5112 ΔE 0.062
- Purple Brown #673A3F ΔE 0.064
- Chestnut #742802 ΔE 0.070
- Saddle Brown #8B4513 ΔE 0.072
Use #66451E 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.