#66501D
Closest named color: Olive Brown (#645403). oklch(44.3% 0.074 85.3), rgb(102, 80, 29).
Aa
White text reads best on this color (7.69:1).
About this color
#66501D is a dark, moderately saturated brown. In OKLCH its lightness is 44%, its chroma 0.074 and its hue 85°. Its hue sits on the warm side of the wheel. The nearest named color is Olive Brown (#645403), ΔE 0.024 away. White text reads best on it, at 7.69:1.
| Hue family | Browns |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.074) |
| Temperature | warm |
| Nearest name | Olive Brown (#645403) |
| Black text | 2.73:1 |
| White text | 7.69:1 |
Values
| HEX | #66501D |
| RGB | rgb(102, 80, 29) |
| HSL | hsl(42, 56%, 26%) |
| OKLCH | oklch(44.3% 0.074 85.3) |
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 #66501D | 7.69:1 | AAA | Lc -91.4 | Preferred for body text |
| Black text on #66501D | 2.73:1 | Fails | Lc 17.4 | Dividers and decoration only |
| #66501D text on white | 7.69:1 | AAA | Lc 86.6 | Fine for body text |
| #66501D text on black | 2.73:1 | Fails | Lc -15.5 | 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 800.
-
Step 50
50
#F7F5F1
oklch(97.1% 0.006 84.6)
-
Step 100
100
#EEE9E1
oklch(93.6% 0.012 79.8)
-
Step 200
200
#E0D8C8
oklch(88.4% 0.023 84.6)
-
Step 300
300
#CDBFA2
oklch(80.9% 0.042 85.3)
-
Step 400
400
#B49E6E
oklch(70.7% 0.07 86)
-
Step 500
500
#A28547
oklch(63% 0.088 84.7)
-
Step 600
600
#8D6E27
oklch(55.5% 0.096 84.7)
-
Step 700
700
#785C19
oklch(49.1% 0.089 84.8)
-
Step 800
800 (this color)
#66501D
oklch(44.3% 0.074 85.3)
-
Step 900
900
#4F3F1A
oklch(37.6% 0.058 85.9)
-
Step 950
950
#2F2510
oklch(27% 0.037 84.4)
#66501D 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) | #5A5017 | 0.023 |
| Deuteranopia (no green cones) | #5F551F | 0.018 |
| Tritanopia (no blue cones) | #6F4945 | 0.065 |
| Achromatopsia (no color) | #535353 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66501D
#66501D
oklch(44.3% 0.074 85.3)
- #40527D
#40527D
oklch(44.3% 0.075 266.1)
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 #66501D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Brown #645403 ΔE 0.024
- Mud Brown #60460F ΔE 0.032
- Green Brown #544E03 ΔE 0.040
- Mud #735C12 ΔE 0.046
- Medium Brown #7F5112 ΔE 0.046
- Milk Chocolate #7F4E1E ΔE 0.047
- Greeny Brown #696006 ΔE 0.053
- Army Green #4B5D16 ΔE 0.059
Use #66501D 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.