#643430
Closest named color: Purple Brown (#673A3F). oklch(38.5% 0.07 25.8), rgb(100, 52, 48).
Aa
White text reads best on this color (10.11:1).
About this color
#643430 is a dark, muted red. In OKLCH its lightness is 39%, its chroma 0.070 and its hue 26°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.025 away. White text reads best on it, at 10.11:1.
| Hue family | Reds |
| Lightness | dark (39%) |
| Chroma | muted (0.070) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.07:1 |
| White text | 10.11:1 |
Values
| HEX | #643430 |
| RGB | rgb(100, 52, 48) |
| HSL | hsl(5, 35%, 29%) |
| OKLCH | oklch(38.5% 0.07 25.8) |
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 #643430 | 10.11:1 | AAA | Lc -97.3 | Preferred for body text |
| Black text on #643430 | 2.07:1 | Fails | Lc 10.7 | Not readable |
| #643430 text on white | 10.11:1 | AAA | Lc 93.2 | Preferred for body text |
| #643430 text on black | 2.07:1 | Fails | Lc -9.3 | 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
#FAF4F3
oklch(97.2% 0.007 28.8)
-
Step 100
100
#F4E6E5
oklch(93.6% 0.015 22.4)
-
Step 200
200
#ECD2CF
oklch(88.4% 0.029 25.6)
-
Step 300
300
#E1B4AF
oklch(80.9% 0.053 25.7)
-
Step 400
400
#D08C85
oklch(70.7% 0.084 25.9)
-
Step 500
500
#C26F67
oklch(63.2% 0.107 26.3)
-
Step 600
600
#AD554F
oklch(55.6% 0.116 25.5)
-
Step 700
700
#944540
oklch(49.1% 0.108 25.5)
-
Step 800
800
#793935
oklch(42.7% 0.09 25.2)
-
Step 900
900 (this color)
#643430
oklch(38.5% 0.07 25.8)
-
Step 950
950
#391D1B
oklch(26.9% 0.044 24.8)
#643430 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) | #3F3C2F | 0.073 |
| Deuteranopia (no green cones) | #4B452F | 0.066 |
| Tritanopia (no blue cones) | #6D2D33 | 0.025 |
| Achromatopsia (no color) | #424242 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643430
#643430
oklch(38.5% 0.07 25.8)
- #004E55
#004E55
oklch(38.7% 0.066 205.2)
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 #643430, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.025
- Chestnut #742802 ΔE 0.052
- Brownish Purple #76424E ΔE 0.065
- Reddy Brown #6E1005 ΔE 0.070
- Mud Brown #60460F ΔE 0.074
- Charcoal Grey #3C4142 ΔE 0.078
- Wine Red #7B0323 ΔE 0.080
- Red Brown #8B2E16 ΔE 0.082
Use #643430 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.