#663D29
Closest named color: Purple Brown (#673A3F). oklch(40.4% 0.066 46.3), rgb(102, 61, 41).
Aa
White text reads best on this color (9.27:1).
About this color
#663D29 is a dark, muted brown. In OKLCH its lightness is 40%, its chroma 0.066 and its hue 46°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.037 away. White text reads best on it, at 9.27:1.
| Hue family | Browns |
| Lightness | dark (40%) |
| Chroma | muted (0.066) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.26:1 |
| White text | 9.27:1 |
Values
| HEX | #663D29 |
| RGB | rgb(102, 61, 41) |
| HSL | hsl(20, 43%, 28%) |
| OKLCH | oklch(40.4% 0.066 46.3) |
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 #663D29 | 9.27:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #663D29 | 2.26:1 | Fails | Lc 12.8 | Not readable |
| #663D29 text on white | 9.27:1 | AAA | Lc 91.2 | Preferred for body text |
| #663D29 text on black | 2.26:1 | Fails | Lc -11.1 | 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
#F9F4F3
oklch(97.1% 0.006 31.1)
-
Step 100
100
#F1E8E4
oklch(93.7% 0.011 45.7)
-
Step 200
200
#E6D5CE
oklch(88.5% 0.021 43.8)
-
Step 300
300
#D7BAAC
oklch(81% 0.039 47.4)
-
Step 400
400
#C29580
oklch(70.7% 0.062 46.2)
-
Step 500
500
#B17B60
oklch(63.1% 0.078 47.4)
-
Step 600
600
#9D6347
oklch(55.7% 0.086 46.2)
-
Step 700
700
#865238
oklch(49.2% 0.08 46.9)
-
Step 800
800 (this color)
#663D29
oklch(40.4% 0.066 46.3)
-
Step 900
900
#58392A
oklch(37.7% 0.051 46.6)
-
Step 950
950
#342119
oklch(26.9% 0.033 43.7)
#663D29 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) | #484227 | 0.058 |
| Deuteranopia (no green cones) | #524B29 | 0.053 |
| Tritanopia (no blue cones) | #6F3638 | 0.038 |
| Achromatopsia (no color) | #474747 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #663D29
#663D29
oklch(40.4% 0.066 46.3)
- #185064
#185064
oklch(40.5% 0.066 225.9)
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 #663D29, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.037
- Mud Brown #60460F ΔE 0.045
- Chestnut #742802 ΔE 0.053
- Brownish Purple #76424E ΔE 0.064
- Milk Chocolate #7F4E1E ΔE 0.074
- Red Brown #8B2E16 ΔE 0.075
- Rust Brown #8B3103 ΔE 0.075
- Green Brown #544E03 ΔE 0.077
Use #663D29 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.