#3C2B78
Closest named color: Dark Slate Blue (#483D8B). oklch(35.5% 0.125 288.5), rgb(60, 43, 120).
Aa
White text reads best on this color (11.60:1).
About this color
#3C2B78 is a dark, moderately saturated purple. In OKLCH its lightness is 36%, its chroma 0.125 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.059 away. White text reads best on it, at 11.60:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.80:1 |
| White text | 11.60:1 |
Values
| HEX | #3C2B78 |
| RGB | rgb(60, 43, 120) |
| HSL | hsl(253, 47%, 32%) |
| OKLCH | oklch(35.5% 0.125 288.5) |
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 #3C2B78 | 11.60:1 | AAA | Lc -100.0 | Preferred for body text |
| Black text on #3C2B78 | 1.80:1 | Fails | Lc 7.6 | Not readable |
| #3C2B78 text on white | 11.60:1 | AAA | Lc 96.3 | Preferred for body text |
| #3C2B78 text on black | 1.80:1 | 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
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#E9E7FC
oklch(93.6% 0.028 290.2)
-
Step 200
200
#D7D4FA
oklch(88.4% 0.052 288.9)
-
Step 300
300
#BEB7FA
oklch(80.9% 0.094 288.9)
-
Step 400
400
#9E8FF8
oklch(70.7% 0.15 288.5)
-
Step 500
500
#886FF4
oklch(63.1% 0.191 288.3)
-
Step 600
600
#7452E3
oklch(55.6% 0.209 288.5)
-
Step 700
700
#6241C5
oklch(49.1% 0.194 288.6)
-
Step 800
800
#5037A0
oklch(42.8% 0.161 288.6)
-
Step 900
900 (this color)
#3C2B78
oklch(35.5% 0.125 288.5)
-
Step 950
950
#261E4A
oklch(27.1% 0.079 288.4)
#3C2B78 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) | #003A7A | 0.069 |
| Deuteranopia (no green cones) | #003776 | 0.069 |
| Tritanopia (no blue cones) | #283D4D | 0.103 |
| Achromatopsia (no color) | #393939 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C2B78
#3C2B78
oklch(35.5% 0.125 288.5)
- #403F00
#403F00
oklch(35.7% 0.077 108.7)
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 #3C2B78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.059
- Indigo #4B0082 ΔE 0.066
- Royal Purple #4B006E ΔE 0.073
- Blueberry #464196 ΔE 0.075
- Marine Blue #01386A ΔE 0.076
- Twilight Blue #0A437A ΔE 0.078
- Midnight Blue #191970 ΔE 0.079
- Prussian Blue #1D3557 ΔE 0.081
Use #3C2B78 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.