#66542E
Closest named color: Olive Brown (#645403). oklch(45.5% 0.06 84.7), rgb(102, 84, 46).
Aa
White text reads best on this color (7.31:1).
About this color
#66542E is a medium-dark, muted brown. In OKLCH its lightness is 45%, its chroma 0.060 and its hue 85°. Its hue sits on the warm side of the wheel. The nearest named color is Olive Brown (#645403), ΔE 0.035 away. White text reads best on it, at 7.31:1.
| Hue family | Browns |
| Lightness | medium-dark (45%) |
| Chroma | muted (0.060) |
| Temperature | warm |
| Nearest name | Olive Brown (#645403) |
| Black text | 2.87:1 |
| White text | 7.31:1 |
Values
| HEX | #66542E |
| RGB | rgb(102, 84, 46) |
| HSL | hsl(41, 38%, 29%) |
| OKLCH | oklch(45.5% 0.06 84.7) |
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 #66542E | 7.31:1 | AAA | Lc -90.2 | Preferred for body text |
| Black text on #66542E | 2.87:1 | Fails | Lc 18.7 | Dividers and decoration only |
| #66542E text on white | 7.31:1 | AAA | Lc 85.3 | Fine for body text |
| #66542E text on black | 2.87:1 | Fails | Lc -16.7 | 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
#DFD8CB
oklch(88.4% 0.019 83.1)
-
Step 300
300
#CBBFA8
oklch(80.8% 0.034 83.7)
-
Step 400
400
#B19E79
oklch(70.6% 0.056 83.8)
-
Step 500
500
#9D8656
oklch(63% 0.071 84.9)
-
Step 600
600
#88703B
oklch(55.6% 0.077 85.5)
-
Step 700
700
#745D2D
oklch(49.1% 0.072 83.9)
-
Step 800
800 (this color)
#66542E
oklch(45.5% 0.06 84.7)
-
Step 900
900
#4D4024
oklch(37.8% 0.046 85.3)
-
Step 950
950
#2D2515
oklch(26.9% 0.03 84)
#66542E 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) | #5C542B | 0.018 |
| Deuteranopia (no green cones) | #61582F | 0.014 |
| Tritanopia (no blue cones) | #6E4E4B | 0.053 |
| Achromatopsia (no color) | #565656 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66542E
#66542E
oklch(45.5% 0.06 84.7)
- #465678
#465678
oklch(45.4% 0.059 264.7)
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 #66542E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Brown #645403 ΔE 0.035
- Mud #735C12 ΔE 0.044
- Milk Chocolate #7F4E1E ΔE 0.046
- Mud Brown #60460F ΔE 0.046
- Medium Brown #7F5112 ΔE 0.047
- Green Brown #544E03 ΔE 0.053
- Greeny Brown #696006 ΔE 0.054
- Army Green #4B5D16 ΔE 0.062
Use #66542E 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.