#633040
Closest named color: Purple Brown (#673A3F). oklch(38.2% 0.076 1.4), rgb(99, 48, 64).
Aa
White text reads best on this color (10.35:1).
About this color
#633040 is a dark, moderately saturated red. In OKLCH its lightness is 38%, its chroma 0.076 and its hue 1°. 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 10.35:1.
| Hue family | Reds |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.076) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.02:1 |
| White text | 10.35:1 |
Values
| HEX | #633040 |
| RGB | rgb(99, 48, 64) |
| HSL | hsl(341, 35%, 29%) |
| OKLCH | oklch(38.2% 0.076 1.4) |
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 #633040 | 10.35:1 | AAA | Lc -97.8 | Preferred for body text |
| Black text on #633040 | 2.02:1 | Fails | Lc 10.2 | Not readable |
| #633040 text on white | 10.35:1 | AAA | Lc 93.7 | Preferred for body text |
| #633040 text on black | 2.02:1 | Fails | Lc -8.8 | 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
#FAF3F5
oklch(97% 0.008 357.8)
-
Step 100
100
#F4E6E9
oklch(93.7% 0.016 2.7)
-
Step 200
200
#ECD1D8
oklch(88.5% 0.031 0.3)
-
Step 300
300
#E1B2BE
oklch(80.9% 0.057 1.4)
-
Step 400
400
#D0889D
oklch(70.6% 0.092 0.7)
-
Step 500
500
#C26985
oklch(63% 0.117 0.9)
-
Step 600
600
#AD506E
oklch(55.6% 0.125 1.7)
-
Step 700
700
#95405C
oklch(49.2% 0.118 1.7)
-
Step 800
800
#79354B
oklch(42.7% 0.098 1.7)
-
Step 900
900 (this color)
#633040
oklch(38.2% 0.076 1.4)
-
Step 950
950
#391C25
oklch(27% 0.047 0.9)
#633040 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) | #383A40 | 0.083 |
| Deuteranopia (no green cones) | #45443F | 0.077 |
| Tritanopia (no blue cones) | #6A2C36 | 0.021 |
| Achromatopsia (no color) | #404040 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #633040
#633040
oklch(38.2% 0.076 1.4)
- #004E45
#004E45
oklch(38% 0.068 181.8)
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 #633040, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.030
- Brownish Purple #76424E ΔE 0.064
- Merlot #730039 ΔE 0.073
- Bordeaux #7B002C ΔE 0.076
- Chestnut #742802 ΔE 0.076
- Wine Red #7B0323 ΔE 0.077
- Grape Purple #5D1451 ΔE 0.078
- Reddy Brown #6E1005 ΔE 0.080
Use #633040 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.