#643623
Closest named color: Purple Brown (#673A3F). oklch(38.7% 0.073 42.7), rgb(100, 54, 35).
Aa
White text reads best on this color (10.02:1).
About this color
#643623 is a dark, moderately saturated brown. In OKLCH its lightness is 39%, its chroma 0.073 and its hue 43°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.040 away. White text reads best on it, at 10.02:1.
| Hue family | Browns |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.073) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.09:1 |
| White text | 10.02:1 |
Values
| HEX | #643623 |
| RGB | rgb(100, 54, 35) |
| HSL | hsl(18, 48%, 26%) |
| OKLCH | oklch(38.7% 0.073 42.7) |
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 #643623 | 10.02:1 | AAA | Lc -97.2 | Preferred for body text |
| Black text on #643623 | 2.09:1 | Fails | Lc 10.9 | Not readable |
| #643623 text on white | 10.02:1 | AAA | Lc 93.0 | Preferred for body text |
| #643623 text on black | 2.09:1 | Fails | Lc -9.5 | 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
#F4E7E2
oklch(93.7% 0.016 42.4)
-
Step 200
200
#ECD3CA
oklch(88.5% 0.031 40.9)
-
Step 300
300
#E0B6A5
oklch(80.9% 0.054 43.2)
-
Step 400
400
#CF8F75
oklch(70.7% 0.087 43)
-
Step 500
500
#C17251
oklch(63.2% 0.11 43.1)
-
Step 600
600
#AD5835
oklch(55.6% 0.121 42.2)
-
Step 700
700
#944827
oklch(49.1% 0.112 42.8)
-
Step 800
800
#783B22
oklch(42.6% 0.093 42.1)
-
Step 900
900 (this color)
#643623
oklch(38.7% 0.073 42.7)
-
Step 950
950
#391E14
oklch(26.9% 0.046 40.9)
#643623 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) | #423C21 | 0.067 |
| Deuteranopia (no green cones) | #4D4622 | 0.062 |
| Tritanopia (no blue cones) | #6D2E31 | 0.037 |
| Achromatopsia (no color) | #424242 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643623
#643623
oklch(38.7% 0.073 42.7)
- #004C60
#004C60
oklch(38.7% 0.072 223)
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 #643623, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.040
- Chestnut #742802 ΔE 0.043
- Mud Brown #60460F ΔE 0.056
- Reddy Brown #6E1005 ΔE 0.071
- Brownish Purple #76424E ΔE 0.075
- Red Brown #8B2E16 ΔE 0.078
- Rust Brown #8B3103 ΔE 0.079
- Charcoal Grey #3C4142 ΔE 0.081
Use #643623 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.