#64403B
Closest named color: Purple Brown (#673A3F). oklch(41.2% 0.052 28.2), rgb(100, 64, 59).
Aa
White text reads best on this color (8.98:1).
About this color
#64403B is a dark, muted red. In OKLCH its lightness is 41%, its chroma 0.052 and its hue 28°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.021 away. White text reads best on it, at 8.98:1.
| Hue family | Reds |
| Lightness | dark (41%) |
| Chroma | muted (0.052) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.33:1 |
| White text | 8.98:1 |
Values
| HEX | #64403B |
| RGB | rgb(100, 64, 59) |
| HSL | hsl(7, 26%, 31%) |
| OKLCH | oklch(41.2% 0.052 28.2) |
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 #64403B | 8.98:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #64403B | 2.33:1 | Fails | Lc 13.5 | Not readable |
| #64403B text on white | 8.98:1 | AAA | Lc 90.5 | Preferred for body text |
| #64403B text on black | 2.33:1 | Fails | Lc -11.8 | 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 800.
-
Step 50
50
#F8F4F4
oklch(97% 0.004 17.2)
-
Step 100
100
#F0E8E7
oklch(93.7% 0.009 26)
-
Step 200
200
#E4D5D3
oklch(88.5% 0.017 26.7)
-
Step 300
300
#D3BAB6
oklch(80.9% 0.029 28.6)
-
Step 400
400
#BD9690
oklch(70.8% 0.048 28.4)
-
Step 500
500
#AC7C75
oklch(63.2% 0.061 28.2)
-
Step 600
600
#97645D
oklch(55.6% 0.068 28)
-
Step 700
700
#80534D
oklch(49% 0.062 27.8)
-
Step 800
800 (this color)
#64403B
oklch(41.2% 0.052 28.2)
-
Step 900
900
#553A36
oklch(37.8% 0.039 28.5)
-
Step 950
950
#32221F
oklch(27.1% 0.025 30.8)
#64403B 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) | #48453B | 0.052 |
| Deuteranopia (no green cones) | #504C3B | 0.049 |
| Tritanopia (no blue cones) | #6B3B3F | 0.021 |
| Achromatopsia (no color) | #494949 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64403B
#64403B
oklch(41.2% 0.052 28.2)
- #245359
#245359
oklch(41.2% 0.052 206.5)
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 #64403B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.021
- Brownish Purple #76424E ΔE 0.047
- Mud Brown #60460F ΔE 0.062
- Charcoal Grey #3C4142 ΔE 0.071
- Chestnut #742802 ΔE 0.071
- Milk Chocolate #7F4E1E ΔE 0.081
- Red Brown #8B2E16 ΔE 0.084
- Rust Brown #8B3103 ΔE 0.087
Use #64403B 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.