#633240
Closest named color: Purple Brown (#673A3F). oklch(38.5% 0.072 2.8), rgb(99, 50, 64).
Aa
White text reads best on this color (10.19:1).
About this color
#633240 is a dark, moderately saturated red. In OKLCH its lightness is 39%, its chroma 0.072 and its hue 3°. 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 10.19:1.
| Hue family | Reds |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.072) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.06:1 |
| White text | 10.19:1 |
Values
| HEX | #633240 |
| RGB | rgb(99, 50, 64) |
| HSL | hsl(343, 33%, 29%) |
| OKLCH | oklch(38.5% 0.072 2.8) |
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 #633240 | 10.19:1 | AAA | Lc -97.5 | Preferred for body text |
| Black text on #633240 | 2.06:1 | Fails | Lc 10.5 | Not readable |
| #633240 text on white | 10.19:1 | AAA | Lc 93.4 | Preferred for body text |
| #633240 text on black | 2.06:1 | Fails | Lc -9.1 | 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
#FAF3F5
oklch(97% 0.008 357.8)
-
Step 100
100
#F4E6E9
oklch(93.7% 0.016 2.7)
-
Step 200
200
#ECD1D7
oklch(88.5% 0.031 2.7)
-
Step 300
300
#E0B3BD
oklch(81% 0.054 3.5)
-
Step 400
400
#CF8A9B
oklch(70.8% 0.087 3.4)
-
Step 500
500
#C06B83
oklch(63% 0.111 2.7)
-
Step 600
600
#AB526D
oklch(55.6% 0.12 2.6)
-
Step 700
700
#93425B
oklch(49.2% 0.112 2.7)
-
Step 800
800
#77374A
oklch(42.7% 0.092 3)
-
Step 900
900 (this color)
#633240
oklch(38.5% 0.072 2.8)
-
Step 950
950
#391C24
oklch(26.9% 0.047 3)
#633240 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) | #3A3B40 | 0.079 |
| Deuteranopia (no green cones) | #46453F | 0.074 |
| Tritanopia (no blue cones) | #6A2E37 | 0.019 |
| Achromatopsia (no color) | #414141 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #633240
#633240
oklch(38.5% 0.072 2.8)
- #004F47
#004F47
oklch(38.4% 0.068 183.3)
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 #633240, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.025
- Brownish Purple #76424E ΔE 0.061
- Chestnut #742802 ΔE 0.075
- Merlot #730039 ΔE 0.078
- Bordeaux #7B002C ΔE 0.079
- Wine Red #7B0323 ΔE 0.079
- Charcoal Grey #3C4142 ΔE 0.080
- Reddy Brown #6E1005 ΔE 0.082
Use #633240 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.