#63372E
Closest named color: Purple Brown (#673A3F). oklch(38.9% 0.065 32.5), rgb(99, 55, 46).
Aa
White text reads best on this color (9.92:1).
About this color
#63372E is a dark, muted red. In OKLCH its lightness is 39%, its chroma 0.065 and its hue 32°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.027 away. White text reads best on it, at 9.92:1.
| Hue family | Reds |
| Lightness | dark (39%) |
| Chroma | muted (0.065) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.11:1 |
| White text | 9.92:1 |
Values
| HEX | #63372E |
| RGB | rgb(99, 55, 46) |
| HSL | hsl(10, 37%, 28%) |
| OKLCH | oklch(38.9% 0.065 32.5) |
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 #63372E | 9.92:1 | AAA | Lc -97.0 | Preferred for body text |
| Black text on #63372E | 2.11:1 | Fails | Lc 11.1 | Not readable |
| #63372E text on white | 9.92:1 | AAA | Lc 92.8 | Preferred for body text |
| #63372E text on black | 2.11:1 | 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
#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
#DEB6AD
oklch(80.9% 0.048 32.8)
-
Step 400
400
#CD8F82
oklch(70.8% 0.078 32.2)
-
Step 500
500
#BE7262
oklch(63.1% 0.1 32.7)
-
Step 600
600
#A95949
oklch(55.5% 0.108 32.5)
-
Step 700
700
#91493A
oklch(49.1% 0.101 33)
-
Step 800
800
#763C31
oklch(42.7% 0.084 32)
-
Step 900
900 (this color)
#63372E
oklch(38.9% 0.065 32.5)
-
Step 950
950
#381F19
oklch(27.1% 0.041 34.3)
#63372E 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) | #413D2D | 0.066 |
| Deuteranopia (no green cones) | #4C462D | 0.060 |
| Tritanopia (no blue cones) | #6C3035 | 0.029 |
| Achromatopsia (no color) | #434343 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63372E
#63372E
oklch(38.9% 0.065 32.5)
- #074E59
#074E59
oklch(39% 0.065 211.5)
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 #63372E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.027
- Chestnut #742802 ΔE 0.052
- Mud Brown #60460F ΔE 0.064
- Brownish Purple #76424E ΔE 0.065
- Charcoal Grey #3C4142 ΔE 0.074
- Reddy Brown #6E1005 ΔE 0.076
- Red Brown #8B2E16 ΔE 0.081
- Rust Brown #8B3103 ΔE 0.085
Use #63372E 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.