#3F2B57
Closest named color: Space Cadet (#2B2D42). oklch(33.4% 0.078 303.4), rgb(63, 43, 87).
Aa
White text reads best on this color (12.39:1).
About this color
#3F2B57 is a dark, moderately saturated purple. In OKLCH its lightness is 33%, its chroma 0.078 and its hue 303°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.055 away. White text reads best on it, at 12.39:1.
| Hue family | Purples |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.078) |
| Temperature | in between |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.69:1 |
| White text | 12.39:1 |
Values
| HEX | #3F2B57 |
| RGB | rgb(63, 43, 87) |
| HSL | hsl(267, 34%, 25%) |
| OKLCH | oklch(33.4% 0.078 303.4) |
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 #3F2B57 | 12.39:1 | AAA | Lc -101.5 | Preferred for body text |
| Black text on #3F2B57 | 1.69:1 | Fails | Lc 0.0 | Not readable |
| #3F2B57 text on white | 12.39:1 | AAA | Lc 98.1 | Preferred for body text |
| #3F2B57 text on black | 1.69:1 | Fails | Lc 0.0 | 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 900.
-
Step 50
50
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#ECE7F3
oklch(93.5% 0.017 304.8)
-
Step 200
200
#DDD4EB
oklch(88.4% 0.033 303.4)
-
Step 300
300
#C8B8E0
oklch(80.9% 0.058 303.3)
-
Step 400
400
#AD92D1
oklch(70.7% 0.095 303.7)
-
Step 500
500
#9976C4
oklch(63.1% 0.12 303.8)
-
Step 600
600
#845EB1
oklch(55.7% 0.13 303.6)
-
Step 700
700
#6F4D98
oklch(49.1% 0.12 303.2)
-
Step 800
800
#5B3F7B
oklch(42.7% 0.1 304)
-
Step 900
900 (this color)
#3F2B57
oklch(33.4% 0.078 303.4)
-
Step 950
950
#2B203A
oklch(26.9% 0.049 302.7)
#3F2B57 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) | #1F3459 | 0.055 |
| Deuteranopia (no green cones) | #243456 | 0.050 |
| Tritanopia (no blue cones) | #3B333C | 0.060 |
| Achromatopsia (no color) | #343434 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F2B57
#3F2B57
oklch(33.4% 0.078 303.4)
- #2F3D05
#2F3D05
oklch(33.6% 0.078 123.4)
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 #3F2B57, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.055
- Prussian Blue #1D3557 ΔE 0.058
- Gunmetal #293241 ΔE 0.063
- Onyx #343A40 ΔE 0.072
- Dark Blue Grey #1F3B4D ΔE 0.072
- Grape Purple #5D1451 ΔE 0.074
- Plum Purple #4E0550 ΔE 0.076
- Deep Violet #490648 ΔE 0.077
Use #3F2B57 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.