#64372B
Closest named color: Purple Brown (#673A3F). oklch(39% 0.068 35.8), rgb(100, 55, 43).
Aa
White text reads best on this color (9.89:1).
About this color
#64372B is a dark, muted red. In OKLCH its lightness is 39%, its chroma 0.068 and its hue 36°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.030 away. White text reads best on it, at 9.89:1.
| Hue family | Reds |
| Lightness | dark (39%) |
| Chroma | muted (0.068) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.12:1 |
| White text | 9.89:1 |
Values
| HEX | #64372B |
| RGB | rgb(100, 55, 43) |
| HSL | hsl(13, 40%, 28%) |
| OKLCH | oklch(39% 0.068 35.8) |
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 #64372B | 9.89:1 | AAA | Lc -96.9 | Preferred for body text |
| Black text on #64372B | 2.12:1 | Fails | Lc 11.2 | Not readable |
| #64372B text on white | 9.89:1 | AAA | Lc 92.7 | Preferred for body text |
| #64372B text on black | 2.12:1 | Fails | Lc -9.7 | 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
#F3E7E3
oklch(93.6% 0.014 39.4)
-
Step 200
200
#EBD3CD
oklch(88.5% 0.028 34.3)
-
Step 300
300
#DFB6AA
oklch(80.9% 0.051 36.9)
-
Step 400
400
#CE8F7E
oklch(70.8% 0.081 35.7)
-
Step 500
500
#BF725D
oklch(63.1% 0.103 36.1)
-
Step 600
600
#AB5943
oklch(55.7% 0.113 36)
-
Step 700
700
#924835
oklch(49% 0.105 35.5)
-
Step 800
800
#773C2C
oklch(42.8% 0.087 36.1)
-
Step 900
900 (this color)
#64372B
oklch(39% 0.068 35.8)
-
Step 950
950
#381E18
oklch(26.8% 0.043 33.8)
#64372B 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) | #423D2A | 0.066 |
| Deuteranopia (no green cones) | #4D472A | 0.062 |
| Tritanopia (no blue cones) | #6D3034 | 0.031 |
| Achromatopsia (no color) | #434343 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64372B
#64372B
oklch(39% 0.068 35.8)
- #044E5C
#044E5C
oklch(39.1% 0.068 215.4)
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 #64372B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.030
- Chestnut #742802 ΔE 0.049
- Mud Brown #60460F ΔE 0.061
- Brownish Purple #76424E ΔE 0.067
- Reddy Brown #6E1005 ΔE 0.074
- Charcoal Grey #3C4142 ΔE 0.077
- Red Brown #8B2E16 ΔE 0.079
- Rust Brown #8B3103 ΔE 0.081
Use #64372B 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.