#66542A
Closest named color: Olive Brown (#645403). oklch(45.4% 0.064 86.6), rgb(102, 84, 42).
Aa
White text reads best on this color (7.32:1).
About this color
#66542A is a medium-dark, muted brown. In OKLCH its lightness is 45%, its chroma 0.064 and its hue 87°. Its hue sits on the warm side of the wheel. The nearest named color is Olive Brown (#645403), ΔE 0.030 away. White text reads best on it, at 7.32:1.
| Hue family | Browns |
| Lightness | medium-dark (45%) |
| Chroma | muted (0.064) |
| Temperature | warm |
| Nearest name | Olive Brown (#645403) |
| Black text | 2.86:1 |
| White text | 7.32:1 |
Values
| HEX | #66542A |
| RGB | rgb(102, 84, 42) |
| HSL | hsl(42, 42%, 28%) |
| OKLCH | oklch(45.4% 0.064 86.6) |
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 #66542A | 7.32:1 | AAA | Lc -90.3 | Preferred for body text |
| Black text on #66542A | 2.86:1 | Fails | Lc 18.6 | Dividers and decoration only |
| #66542A text on white | 7.32:1 | AAA | Lc 85.4 | Fine for body text |
| #66542A text on black | 2.86:1 | Fails | Lc -16.6 | 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 800.
-
Step 50
50
#F7F5F2
oklch(97.1% 0.005 78.3)
-
Step 100
100
#EDE9E2
oklch(93.5% 0.01 81.8)
-
Step 200
200
#DFD9CA
oklch(88.6% 0.021 88.7)
-
Step 300
300
#CBC0A6
oklch(81% 0.037 87.8)
-
Step 400
400
#B19F76
oklch(70.8% 0.06 87)
-
Step 500
500
#9E8752
oklch(63.2% 0.077 86.8)
-
Step 600
600
#897035
oklch(55.7% 0.084 86.5)
-
Step 700
700
#745D28
oklch(49% 0.077 85.7)
-
Step 800
800 (this color)
#66542A
oklch(45.4% 0.064 86.6)
-
Step 900
900
#4D4021
oklch(37.7% 0.05 87.2)
-
Step 950
950
#2D2514
oklch(26.9% 0.031 85.2)
#66542A 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) | #5D5326 | 0.017 |
| Deuteranopia (no green cones) | #61582C | 0.013 |
| Tritanopia (no blue cones) | #6E4E4A | 0.056 |
| Achromatopsia (no color) | #565656 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66542A
#66542A
oklch(45.4% 0.064 86.6)
- #46557A
#46557A
oklch(45.3% 0.064 266.9)
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 #66542A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Brown #645403 ΔE 0.030
- Mud #735C12 ΔE 0.042
- Mud Brown #60460F ΔE 0.045
- Milk Chocolate #7F4E1E ΔE 0.046
- Medium Brown #7F5112 ΔE 0.046
- Green Brown #544E03 ΔE 0.050
- Greeny Brown #696006 ΔE 0.051
- Army Green #4B5D16 ΔE 0.059
Use #66542A 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.