#633751
Closest named color: Purple Brown (#673A3F). oklch(40% 0.072 344.5), rgb(99, 55, 81).
Aa
White text reads best on this color (9.56:1).
About this color
#633751 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.072 and its hue 345°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.035 away. White text reads best on it, at 9.56:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.072) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.19:1 |
| White text | 9.56:1 |
Values
| HEX | #633751 |
| RGB | rgb(99, 55, 81) |
| HSL | hsl(325, 29%, 30%) |
| OKLCH | oklch(40% 0.072 344.5) |
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 #633751 | 9.56:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #633751 | 2.19:1 | Fails | Lc 12.0 | Not readable |
| #633751 text on white | 9.56:1 | AAA | Lc 91.9 | Preferred for body text |
| #633751 text on black | 2.19:1 | Fails | Lc -10.5 | 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
#F9F4F6
oklch(97.2% 0.006 350.8)
-
Step 100
100
#F2E6EC
oklch(93.6% 0.015 345.6)
-
Step 200
200
#E9D2DE
oklch(88.6% 0.03 344.9)
-
Step 300
300
#DBB3C9
oklch(80.9% 0.054 344.2)
-
Step 400
400
#C88BAD
oklch(70.7% 0.086 345)
-
Step 500
500
#B86D99
oklch(63.1% 0.11 344.6)
-
Step 600
600
#A35484
oklch(55.6% 0.12 344.4)
-
Step 700
700
#8C4470
oklch(49.2% 0.112 344.5)
-
Step 800
800
#72385B
oklch(42.7% 0.093 344.7)
-
Step 900
900 (this color)
#633751
oklch(40% 0.072 344.5)
-
Step 950
950
#361D2C
oklch(27% 0.046 343.8)
#633751 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) | #3A4152 | 0.076 |
| Deuteranopia (no green cones) | #454850 | 0.070 |
| Tritanopia (no blue cones) | #683740 | 0.030 |
| Achromatopsia (no color) | #454545 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #633751
#633751
oklch(40% 0.072 344.5)
- #18543E
#18543E
oklch(40.1% 0.072 164.8)
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 #633751, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.035
- Brownish Purple #76424E ΔE 0.052
- Grape Purple #5D1451 ΔE 0.082
- Charcoal Grey #3C4142 ΔE 0.083
- Velvet #750851 ΔE 0.084
- Red Purple #820747 ΔE 0.088
- Merlot #730039 ΔE 0.089
- Wine #80013F ΔE 0.090
Use #633751 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.