#64403E
Closest named color: Purple Brown (#673A3F). oklch(41.3% 0.051 23), rgb(100, 64, 62).
Aa
White text reads best on this color (8.95:1).
About this color
#64403E is a dark, muted red. In OKLCH its lightness is 41%, its chroma 0.051 and its hue 23°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.018 away. White text reads best on it, at 8.95:1.
| Hue family | Reds |
| Lightness | dark (41%) |
| Chroma | muted (0.051) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.34:1 |
| White text | 8.95:1 |
Values
| HEX | #64403E |
| RGB | rgb(100, 64, 62) |
| HSL | hsl(3, 23%, 32%) |
| OKLCH | oklch(41.3% 0.051 23) |
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 #64403E | 8.95:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #64403E | 2.34:1 | Fails | Lc 13.5 | Not readable |
| #64403E text on white | 8.95:1 | AAA | Lc 90.4 | Preferred for body text |
| #64403E text on black | 2.34:1 | Fails | Lc -11.9 | 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 800.
-
Step 50
50
#F8F4F4
oklch(97% 0.004 17.2)
-
Step 100
100
#F0E8E7
oklch(93.7% 0.009 26)
-
Step 200
200
#E4D5D4
oklch(88.5% 0.017 22.1)
-
Step 300
300
#D3BAB8
oklch(81% 0.029 23.2)
-
Step 400
400
#BD9593
oklch(70.6% 0.048 21.7)
-
Step 500
500
#AB7B78
oklch(63% 0.061 23)
-
Step 600
600
#966461
oklch(55.6% 0.065 23.2)
-
Step 700
700
#805350
oklch(49.1% 0.061 23.7)
-
Step 800
800 (this color)
#64403E
oklch(41.3% 0.051 23)
-
Step 900
900
#553938
oklch(37.7% 0.04 21.4)
-
Step 950
950
#322221
oklch(27.1% 0.025 22.9)
#64403E 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) | #47453E | 0.053 |
| Deuteranopia (no green cones) | #504C3D | 0.049 |
| Tritanopia (no blue cones) | #6B3C40 | 0.018 |
| Achromatopsia (no color) | #494949 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64403E
#64403E
oklch(41.3% 0.051 23)
- #255357
#255357
oklch(41.2% 0.051 203)
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 #64403E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.018
- Brownish Purple #76424E ΔE 0.044
- Mud Brown #60460F ΔE 0.066
- Charcoal Grey #3C4142 ΔE 0.071
- Chestnut #742802 ΔE 0.074
- Milk Chocolate #7F4E1E ΔE 0.084
- Red Brown #8B2E16 ΔE 0.086
- Dark Slate Gray #2F4F4F ΔE 0.089
Use #64403E 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.