#643125
Closest named color: Purple Brown (#673A3F). oklch(37.8% 0.077 34.4), rgb(100, 49, 37).
Aa
White text reads best on this color (10.45:1).
About this color
#643125 is a dark, moderately saturated red. In OKLCH its lightness is 38%, its chroma 0.077 and its hue 34°. 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 10.45:1.
| Hue family | Reds |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.077) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.00:1 |
| White text | 10.45:1 |
Values
| HEX | #643125 |
| RGB | rgb(100, 49, 37) |
| HSL | hsl(11, 46%, 27%) |
| OKLCH | oklch(37.8% 0.077 34.4) |
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 #643125 | 10.45:1 | AAA | Lc -98.0 | Preferred for body text |
| Black text on #643125 | 2.00:1 | Fails | Lc 10.0 | Not readable |
| #643125 text on white | 10.45:1 | AAA | Lc 93.9 | Preferred for body text |
| #643125 text on black | 2.00:1 | Fails | Lc -8.6 | 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
#F5E6E3
oklch(93.6% 0.017 31.1)
-
Step 200
200
#EDD2CB
oklch(88.4% 0.032 34.9)
-
Step 300
300
#E3B4A8
oklch(80.9% 0.058 34.7)
-
Step 400
400
#D38C7A
oklch(70.7% 0.091 34.9)
-
Step 500
500
#C66D58
oklch(63.1% 0.118 34.3)
-
Step 600
600
#B1533D
oklch(55.5% 0.128 34.4)
-
Step 700
700
#98432F
oklch(49.1% 0.119 34.6)
-
Step 800
800
#7C3828
oklch(42.8% 0.099 34.5)
-
Step 900
900 (this color)
#643125
oklch(37.8% 0.077 34.4)
-
Step 950
950
#3B1D16
oklch(27% 0.049 34.1)
#643125 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) | #3E3924 | 0.076 |
| Deuteranopia (no green cones) | #4A4424 | 0.071 |
| Tritanopia (no blue cones) | #6D282E | 0.033 |
| Achromatopsia (no color) | #3F3F3F | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643125
#643125
oklch(37.8% 0.077 34.4)
- #004A57
#004A57
oklch(37.6% 0.066 214.5)
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 #643125, 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 0.042
- Reddy Brown #6E1005 ΔE 0.060
- Mud Brown #60460F ΔE 0.070
- Blood #770001 ΔE 0.073
- Wine Red #7B0323 ΔE 0.077
- Brownish Purple #76424E ΔE 0.078
- Maroon #800000 ΔE 0.078
Use #643125 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.