#663629
Closest named color: Purple Brown (#673A3F). oklch(39.1% 0.072 36.1), rgb(102, 54, 41).
Aa
White text reads best on this color (9.88:1).
About this color
#663629 is a dark, moderately saturated red. In OKLCH its lightness is 39%, its chroma 0.072 and its hue 36°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.032 away. White text reads best on it, at 9.88:1.
| Hue family | Reds |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.072) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.12:1 |
| White text | 9.88:1 |
Values
| HEX | #663629 |
| RGB | rgb(102, 54, 41) |
| HSL | hsl(13, 43%, 28%) |
| OKLCH | oklch(39.1% 0.072 36.1) |
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 #663629 | 9.88:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #663629 | 2.12:1 | Fails | Lc 11.3 | Not readable |
| #663629 text on white | 9.88:1 | AAA | Lc 92.7 | Preferred for body text |
| #663629 text on black | 2.12:1 | Fails | Lc -9.8 | 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 900.
-
Step 50
50
#FAF4F2
oklch(97.1% 0.007 39.5)
-
Step 100
100
#F4E6E3
oklch(93.5% 0.016 32)
-
Step 200
200
#ECD3CC
oklch(88.6% 0.03 36.2)
-
Step 300
300
#E1B5A9
oklch(80.9% 0.054 35.7)
-
Step 400
400
#D08D7B
oklch(70.6% 0.086 35.7)
-
Step 500
500
#C37059
oklch(63.2% 0.111 36.3)
-
Step 600
600
#AE563F
oklch(55.6% 0.121 35.7)
-
Step 700
700
#954631
oklch(49.1% 0.112 35.9)
-
Step 800
800
#793A29
oklch(42.7% 0.093 36.1)
-
Step 900
900 (this color)
#663629
oklch(39.1% 0.072 36.1)
-
Step 950
950
#3A1E16
oklch(27.1% 0.046 36.8)
#663629 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) | #423D28 | 0.070 |
| Deuteranopia (no green cones) | #4E4728 | 0.065 |
| Tritanopia (no blue cones) | #6F2E33 | 0.033 |
| Achromatopsia (no color) | #434343 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #663629
#663629
oklch(39.1% 0.072 36.1)
- #004E5D
#004E5D
oklch(39.1% 0.07 216.3)
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 #663629, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.032
- Chestnut #742802 ΔE 0.044
- Mud Brown #60460F ΔE 0.062
- Brownish Purple #76424E ΔE 0.067
- Reddy Brown #6E1005 ΔE 0.071
- Red Brown #8B2E16 ΔE 0.075
- Rust Brown #8B3103 ΔE 0.077
- Charcoal Grey #3C4142 ΔE 0.082
Use #663629 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.