#66520D
Closest named color: Olive Brown (#645403). oklch(44.7% 0.086 91.2), rgb(102, 82, 13).
Aa
White text reads best on this color (7.56:1).
About this color
#66520D is a dark, moderately saturated brown. In OKLCH its lightness is 45%, its chroma 0.086 and its hue 91°. Its hue sits on the warm side of the wheel. The nearest named color is Olive Brown (#645403), ΔE 0.009 away. White text reads best on it, at 7.56:1.
| Hue family | Browns |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.086) |
| Temperature | warm |
| Nearest name | Olive Brown (#645403) |
| Black text | 2.77:1 |
| White text | 7.56:1 |
Values
| HEX | #66520D |
| RGB | rgb(102, 82, 13) |
| HSL | hsl(47, 77%, 23%) |
| OKLCH | oklch(44.7% 0.086 91.2) |
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 #66520D | 7.56:1 | AAA | Lc -90.9 | Preferred for body text |
| Black text on #66520D | 2.77:1 | Fails | Lc 17.9 | Dividers and decoration only |
| #66520D text on white | 7.56:1 | AAA | Lc 86.1 | Fine for body text |
| #66520D text on black | 2.77:1 | Fails | Lc -15.9 | 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 800.
-
Step 50
50
#F7F5F0
oklch(97% 0.007 88.6)
-
Step 100
100
#EDEADF
oklch(93.6% 0.015 94.2)
-
Step 200
200
#E0D9C5
oklch(88.5% 0.028 90.9)
-
Step 300
300
#CCC09C
oklch(80.8% 0.05 91.8)
-
Step 400
400
#B39F65
oklch(70.7% 0.08 91.1)
-
Step 500
500
#A08738
oklch(63.1% 0.102 91.6)
-
Step 600
600
#8C7009
oklch(55.7% 0.111 90.9)
-
Step 700
700
#765E00
oklch(49.2% 0.101 91.4)
-
Step 800
800 (this color)
#66520D
oklch(44.7% 0.086 91.2)
-
Step 900
900
#4F4010
oklch(37.7% 0.067 91)
-
Step 950
950
#2E260C
oklch(27.1% 0.042 92.3)
#66520D 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) | #5C5100 | 0.020 |
| Deuteranopia (no green cones) | #615612 | 0.013 |
| Tritanopia (no blue cones) | #6F4A45 | 0.078 |
| Achromatopsia (no color) | #545454 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66520D
#66520D
oklch(44.7% 0.086 91.2)
- #435184
#435184
oklch(44.7% 0.086 271)
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 #66520D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Brown #645403 ΔE 0.009
- Green Brown #544E03 ΔE 0.036
- Mud Brown #60460F ΔE 0.038
- Mud #735C12 ΔE 0.039
- Greeny Brown #696006 ΔE 0.043
- Medium Brown #7F5112 ΔE 0.047
- Army Green #4B5D16 ΔE 0.051
- Milk Chocolate #7F4E1E ΔE 0.051
Use #66520D 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.