#66340A
Closest named color: Chestnut (#742802). oklch(38.3% 0.088 54.5), rgb(102, 52, 10).
Aa
White text reads best on this color (10.19:1).
About this color
#66340A is a dark, moderately saturated brown. In OKLCH its lightness is 38%, its chroma 0.088 and its hue 55°. Its hue sits on the warm side of the wheel. The nearest named color is Chestnut (#742802), ΔE 0.036 away. White text reads best on it, at 10.19:1.
| Hue family | Browns |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.088) |
| Temperature | warm |
| Nearest name | Chestnut (#742802) |
| Black text | 2.06:1 |
| White text | 10.19:1 |
Values
| HEX | #66340A |
| RGB | rgb(102, 52, 10) |
| HSL | hsl(27, 82%, 22%) |
| OKLCH | oklch(38.3% 0.088 54.5) |
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 #66340A | 10.19:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #66340A | 2.06:1 | Fails | Lc 10.7 | Not readable |
| #66340A text on white | 10.19:1 | AAA | Lc 93.3 | Preferred for body text |
| #66340A text on black | 2.06:1 | Fails | Lc -9.2 | Not readable |
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 900.
-
Step 50
50
#FAF4F0
oklch(97.1% 0.008 56.3)
-
Step 100
100
#F5E7DE
oklch(93.7% 0.02 55.1)
-
Step 200
200
#EDD3C3
oklch(88.4% 0.036 53.7)
-
Step 300
300
#E3B699
oklch(80.9% 0.066 54.4)
-
Step 400
400
#D48E5F
oklch(70.7% 0.106 54)
-
Step 500
500
#C7702C
oklch(63.2% 0.136 54.6)
-
Step 600
600
#AF5800
oklch(55.6% 0.139 54.3)
-
Step 700
700
#944A00
oklch(49.2% 0.122 54.7)
-
Step 800
800
#7A3C00
oklch(42.8% 0.106 54.9)
-
Step 900
900 (this color)
#66340A
oklch(38.3% 0.088 54.5)
-
Step 950
950
#3B1E08
oklch(27% 0.056 54.6)
#66340A 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) | #433A03 | 0.072 |
| Deuteranopia (no green cones) | #4F4609 | 0.065 |
| Tritanopia (no blue cones) | #71292C | 0.057 |
| Achromatopsia (no color) | #414141 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66340A
#66340A
oklch(38.3% 0.088 54.5)
- #004967
#004967
oklch(38.2% 0.08 234.3)
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 #66340A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chestnut #742802 ΔE 0.036
- Mud Brown #60460F ΔE 0.049
- Purple Brown #673A3F ΔE 0.062
- Reddy Brown #6E1005 ΔE 0.069
- Rust Brown #8B3103 ΔE 0.076
- Red Brown #8B2E16 ΔE 0.078
- Green Brown #544E03 ΔE 0.081
- Blood #770001 ΔE 0.081
Use #66340A 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.