#64372F
Closest named color: Purple Brown (#673A3F). oklch(39.1% 0.066 31), rgb(100, 55, 47).
Aa
White text reads best on this color (9.86:1).
About this color
#64372F is a dark, muted red. In OKLCH its lightness is 39%, its chroma 0.066 and its hue 31°. 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 9.86:1.
| Hue family | Reds |
| Lightness | dark (39%) |
| Chroma | muted (0.066) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.12:1 |
| White text | 9.86:1 |
Values
| HEX | #64372F |
| RGB | rgb(100, 55, 47) |
| HSL | hsl(9, 36%, 29%) |
| OKLCH | oklch(39.1% 0.066 31) |
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 #64372F | 9.86:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #64372F | 2.12:1 | Fails | Lc 11.3 | Not readable |
| #64372F text on white | 9.86:1 | AAA | Lc 92.6 | Preferred for body text |
| #64372F text on black | 2.12:1 | Fails | Lc -9.8 | 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 900.
-
Step 50
50
#FAF4F3
oklch(97.2% 0.007 28.8)
-
Step 100
100
#F3E7E4
oklch(93.7% 0.014 34.3)
-
Step 200
200
#EBD3CE
oklch(88.5% 0.028 31.7)
-
Step 300
300
#DFB5AD
oklch(80.8% 0.05 30.7)
-
Step 400
400
#CD8E82
oklch(70.6% 0.079 31.1)
-
Step 500
500
#BF7163
oklch(63.1% 0.102 31)
-
Step 600
600
#AA584A
oklch(55.5% 0.11 31)
-
Step 700
700
#92483B
oklch(49.1% 0.103 31.4)
-
Step 800
800
#773B31
oklch(42.7% 0.086 30.8)
-
Step 900
900 (this color)
#64372F
oklch(39.1% 0.066 31)
-
Step 950
950
#381E1A
oklch(26.9% 0.042 29.5)
#64372F 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) | #423E2E | 0.066 |
| Deuteranopia (no green cones) | #4C472E | 0.063 |
| Tritanopia (no blue cones) | #6D3035 | 0.028 |
| Achromatopsia (no color) | #434343 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64372F
#64372F
oklch(39.1% 0.066 31)
- #044E59
#044E59
oklch(38.9% 0.066 211.3)
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 #64372F, 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 0.063
- Mud Brown #60460F ΔE 0.065
- Reddy Brown #6E1005 ΔE 0.076
- Charcoal Grey #3C4142 ΔE 0.076
- Red Brown #8B2E16 ΔE 0.080
- Rust Brown #8B3103 ΔE 0.083
Use #64372F 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.