#66523A
Closest named color: Milk Chocolate (#7F4E1E). oklch(45.3% 0.045 71.4), rgb(102, 82, 58).
Aa
White text reads best on this color (7.41:1).
About this color
#66523A is a medium-dark, muted brown. In OKLCH its lightness is 45%, its chroma 0.045 and its hue 71°. Its hue sits on the warm side of the wheel. The nearest named color is Milk Chocolate (#7F4E1E), ΔE 0.050 away. White text reads best on it, at 7.41:1.
| Hue family | Browns |
| Lightness | medium-dark (45%) |
| Chroma | muted (0.045) |
| Temperature | warm |
| Nearest name | Milk Chocolate (#7F4E1E) |
| Black text | 2.83:1 |
| White text | 7.41:1 |
Values
| HEX | #66523A |
| RGB | rgb(102, 82, 58) |
| HSL | hsl(33, 28%, 31%) |
| OKLCH | oklch(45.3% 0.045 71.4) |
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 #66523A | 7.41:1 | AAA | Lc -90.6 | Preferred for body text |
| Black text on #66523A | 2.83:1 | Fails | Lc 18.3 | Dividers and decoration only |
| #66523A text on white | 7.41:1 | AAA | Lc 85.7 | Fine for body text |
| #66523A text on black | 2.83:1 | Fails | Lc -16.3 | 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
#F7F5F3
oklch(97.1% 0.003 67.8)
-
Step 100
100
#EDE9E4
oklch(93.6% 0.008 73.7)
-
Step 200
200
#DFD8CF
oklch(88.5% 0.014 74.4)
-
Step 300
300
#CCBEAF
oklch(80.9% 0.026 69.4)
-
Step 400
400
#B29D84
oklch(70.8% 0.043 71.9)
-
Step 500
500
#9E8466
oklch(63% 0.053 70.6)
-
Step 600
600
#896E4D
oklch(55.6% 0.058 71.8)
-
Step 700
700
#745C3E
oklch(49.1% 0.054 72.2)
-
Step 800
800 (this color)
#66523A
oklch(45.3% 0.045 71.4)
-
Step 900
900
#4E3F2D
oklch(37.8% 0.035 71.5)
-
Step 950
950
#2D251A
oklch(27% 0.023 75.4)
#66523A 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) | #595338 | 0.023 |
| Deuteranopia (no green cones) | #5E573B | 0.019 |
| Tritanopia (no blue cones) | #6D4D4C | 0.038 |
| Achromatopsia (no color) | #555555 | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66523A
#66523A
oklch(45.3% 0.045 71.4)
- #43586F
#43586F
oklch(45.3% 0.046 251.1)
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 #66523A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Milk Chocolate #7F4E1E ΔE 0.050
- Mud Brown #60460F ΔE 0.053
- Olive Brown #645403 ΔE 0.054
- Medium Brown #7F5112 ΔE 0.056
- Mud #735C12 ΔE 0.060
- Green Brown #544E03 ΔE 0.065
- Brownish Purple #76424E ΔE 0.069
- Greeny Brown #696006 ΔE 0.072
Use #66523A 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.