#3A3151
Closest named color: Space Cadet (#2B2D42). oklch(33.8% 0.056 296.2), rgb(58, 49, 81).
Aa
White text reads best on this color (12.08:1).
About this color
#3A3151 is a dark, muted purple. In OKLCH its lightness is 34%, its chroma 0.056 and its hue 296°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.040 away. White text reads best on it, at 12.08:1.
| Hue family | Purples |
| Lightness | dark (34%) |
| Chroma | muted (0.056) |
| Temperature | in between |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.73:1 |
| White text | 12.08:1 |
Values
| HEX | #3A3151 |
| RGB | rgb(58, 49, 81) |
| HSL | hsl(257, 25%, 25%) |
| OKLCH | oklch(33.8% 0.056 296.2) |
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 #3A3151 | 12.08:1 | AAA | Lc -101.1 | Preferred for body text |
| Black text on #3A3151 | 1.73:1 | Fails | Lc 0.0 | Not readable |
| #3A3151 text on white | 12.08:1 | AAA | Lc 97.6 | Preferred for body text |
| #3A3151 text on black | 1.73:1 | 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
#F6F5F9
oklch(97.2% 0.005 297.7)
-
Step 100
100
#EAE8F1
oklch(93.5% 0.012 296.3)
-
Step 200
200
#DAD6E7
oklch(88.4% 0.023 296.7)
-
Step 300
300
#C3BCD9
oklch(81% 0.041 296.5)
-
Step 400
400
#A498C6
oklch(70.6% 0.067 296.6)
-
Step 500
500
#8E7FB8
oklch(63.2% 0.086 295.9)
-
Step 600
600
#7867A4
oklch(55.5% 0.094 296)
-
Step 700
700
#65568C
oklch(49.1% 0.086 295.9)
-
Step 800
800
#534672
oklch(42.7% 0.073 296.8)
-
Step 900
900 (this color)
#3A3151
oklch(33.8% 0.056 296.2)
-
Step 950
950
#282336
oklch(27.1% 0.035 296)
#3A3151 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) | #293652 | 0.030 |
| Deuteranopia (no green cones) | #2A3650 | 0.029 |
| Tritanopia (no blue cones) | #35363D | 0.045 |
| Achromatopsia (no color) | #363636 | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A3151
#3A3151
oklch(33.8% 0.056 296.2)
- #363B17
#363B17
oklch(33.8% 0.056 116)
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 #3A3151, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.040
- Gunmetal #293241 ΔE 0.043
- Prussian Blue #1D3557 ΔE 0.044
- Onyx #343A40 ΔE 0.049
- Dark Blue Grey #1F3B4D ΔE 0.050
- Charcoal Grey #3C4142 ΔE 0.065
- Dark Grey Blue #29465B ΔE 0.066
- Midnight Green #073B4C ΔE 0.067
Use #3A3151 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.