#633F6D
Closest named color: Dusk (#4E5481). oklch(42.8% 0.085 318.7), rgb(99, 63, 109).
Aa
White text reads best on this color (8.52:1).
About this color
#633F6D is a dark, moderately saturated purple. In OKLCH its lightness is 43%, its chroma 0.085 and its hue 319°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.066 away. White text reads best on it, at 8.52:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.085) |
| Temperature | in between |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.46:1 |
| White text | 8.52:1 |
Values
| HEX | #633F6D |
| RGB | rgb(99, 63, 109) |
| HSL | hsl(287, 27%, 34%) |
| OKLCH | oklch(42.8% 0.085 318.7) |
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 #633F6D | 8.52:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #633F6D | 2.46:1 | Fails | Lc 14.8 | Not readable |
| #633F6D text on white | 8.52:1 | AAA | Lc 89.2 | Fine for body text |
| #633F6D text on black | 2.46:1 | Fails | Lc -13.0 | 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 800.
-
Step 50
50
#F7F4F8
oklch(97.1% 0.006 317.8)
-
Step 100
100
#EEE7F0
oklch(93.6% 0.014 318.7)
-
Step 200
200
#E1D4E5
oklch(88.5% 0.027 318.2)
-
Step 300
300
#CFB7D6
oklch(80.9% 0.05 318.5)
-
Step 400
400
#B691C1
oklch(70.7% 0.08 318.4)
-
Step 500
500
#A475B1
oklch(63.1% 0.102 318.8)
-
Step 600
600
#8F5D9D
oklch(55.7% 0.111 318.7)
-
Step 700
700
#794C86
oklch(49.1% 0.103 318.4)
-
Step 800
800 (this color)
#633F6D
oklch(42.8% 0.085 318.7)
-
Step 900
900
#513658
oklch(37.8% 0.066 319.2)
-
Step 950
950
#2F2034
oklch(27.1% 0.042 317.5)
#633F6D 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) | #384A6F | 0.074 |
| Deuteranopia (no green cones) | #424E6C | 0.067 |
| Tritanopia (no blue cones) | #634551 | 0.055 |
| Achromatopsia (no color) | #4C4C4C | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #633F6D
#633F6D
oklch(42.8% 0.085 318.7)
- #365A2A
#365A2A
oklch(42.8% 0.085 138.4)
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 #633F6D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.066
- Brownish Purple #76424E ΔE 0.066
- Twilight #4E518B ΔE 0.068
- Dusty Grape #545775 ΔE 0.068
- Dark Slate Blue #483D8B ΔE 0.072
- Purple Brown #673A3F ΔE 0.075
- Rebecca Purple #663399 ΔE 0.082
- Light Eggplant #894585 ΔE 0.084
Use #633F6D 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.