#643325
Closest named color: Purple Brown (#673A3F). oklch(38.1% 0.075 36.8), rgb(100, 51, 37).
Aa
White text reads best on this color (10.28:1).
About this color
#643325 is a dark, moderately saturated red. In OKLCH its lightness is 38%, its chroma 0.075 and its hue 37°. 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 10.28:1.
| Hue family | Reds |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.075) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.04:1 |
| White text | 10.28:1 |
Values
| HEX | #643325 |
| RGB | rgb(100, 51, 37) |
| HSL | hsl(13, 46%, 27%) |
| OKLCH | oklch(38.1% 0.075 36.8) |
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 #643325 | 10.28:1 | AAA | Lc -97.6 | Preferred for body text |
| Black text on #643325 | 2.04:1 | Fails | Lc 10.4 | Not readable |
| #643325 text on white | 10.28:1 | AAA | Lc 93.6 | Preferred for body text |
| #643325 text on black | 2.04:1 | Fails | Lc -8.9 | 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
#F4E6E2
oklch(93.5% 0.016 36.5)
-
Step 200
200
#EDD3CB
oklch(88.6% 0.031 37.8)
-
Step 300
300
#E2B5A8
oklch(81% 0.056 36.7)
-
Step 400
400
#D28D79
oklch(70.8% 0.09 36.9)
-
Step 500
500
#C46F56
oklch(63.1% 0.114 37.2)
-
Step 600
600
#AF553B
oklch(55.5% 0.124 36.9)
-
Step 700
700
#96452E
oklch(49% 0.115 36.7)
-
Step 800
800
#7A3927
oklch(42.6% 0.096 36.4)
-
Step 900
900 (this color)
#643325
oklch(38.1% 0.075 36.8)
-
Step 950
950
#3A1E15
oklch(27.1% 0.047 38.6)
#643325 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) | #3F3A24 | 0.073 |
| Deuteranopia (no green cones) | #4B4524 | 0.068 |
| Tritanopia (no blue cones) | #6D2A30 | 0.035 |
| Achromatopsia (no color) | #414141 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643325
#643325
oklch(38.1% 0.075 36.8)
- #004B5A
#004B5A
oklch(38.1% 0.068 217)
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 #643325, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.039
- Chestnut #742802 ΔE 0.042
- Reddy Brown #6E1005 ΔE 0.064
- Mud Brown #60460F ΔE 0.065
- Brownish Purple #76424E ΔE 0.076
- Blood #770001 ΔE 0.077
- Red Brown #8B2E16 ΔE 0.079
- Wine Red #7B0323 ΔE 0.081
Use #643325 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.