#664433
Closest named color: Purple Brown (#673A3F). oklch(42.1% 0.054 47.4), rgb(102, 68, 51).
Aa
White text reads best on this color (8.60:1).
About this color
#664433 is a dark, muted brown. In OKLCH its lightness is 42%, its chroma 0.054 and its hue 47°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.039 away. White text reads best on it, at 8.60:1.
| Hue family | Browns |
| Lightness | dark (42%) |
| Chroma | muted (0.054) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.43:1 |
| White text | 8.60:1 |
Values
| HEX | #664433 |
| RGB | rgb(102, 68, 51) |
| HSL | hsl(20, 33%, 30%) |
| OKLCH | oklch(42.1% 0.054 47.4) |
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 #664433 | 8.60:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #664433 | 2.43:1 | Fails | Lc 14.5 | Not readable |
| #664433 text on white | 8.60:1 | AAA | Lc 89.5 | Fine for body text |
| #664433 text on black | 2.43:1 | Fails | Lc -12.8 | 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 800.
-
Step 50
50
#F8F5F3
oklch(97.2% 0.004 56.4)
-
Step 100
100
#EFE8E5
oklch(93.6% 0.009 44.9)
-
Step 200
200
#E4D6CF
oklch(88.5% 0.018 48.5)
-
Step 300
300
#D3BBAF
oklch(80.9% 0.032 48.3)
-
Step 400
400
#BC9886
oklch(70.8% 0.05 48)
-
Step 500
500
#AB7E67
oklch(63.2% 0.065 48.2)
-
Step 600
600
#96664F
oklch(55.5% 0.071 46.4)
-
Step 700
700
#805540
oklch(49.1% 0.066 46.8)
-
Step 800
800 (this color)
#664433
oklch(42.1% 0.054 47.4)
-
Step 900
900
#553B2E
oklch(37.8% 0.043 47.6)
-
Step 950
950
#32221B
oklch(26.9% 0.028 44.6)
#664433 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) | #4D4832 | 0.046 |
| Deuteranopia (no green cones) | #554F33 | 0.043 |
| Tritanopia (no blue cones) | #6E3E40 | 0.034 |
| Achromatopsia (no color) | #4C4C4C | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #664433
#664433
oklch(42.1% 0.054 47.4)
- #2A5364
#2A5364
oklch(42% 0.054 227.2)
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 #664433, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.039
- Mud Brown #60460F ΔE 0.045
- Brownish Purple #76424E ΔE 0.055
- Milk Chocolate #7F4E1E ΔE 0.064
- Chestnut #742802 ΔE 0.071
- Green Brown #544E03 ΔE 0.073
- Olive Brown #645403 ΔE 0.074
- Medium Brown #7F5112 ΔE 0.074
Use #664433 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.