#3C2A81
Closest named color: Dark Slate Blue (#483D8B). oklch(36.1% 0.139 286.7), rgb(60, 42, 129).
Aa
White text reads best on this color (11.41:1).
About this color
#3C2A81 is a dark, moderately saturated purple. In OKLCH its lightness is 36%, its chroma 0.139 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.055 away. White text reads best on it, at 11.41:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.84:1 |
| White text | 11.41:1 |
Values
| HEX | #3C2A81 |
| RGB | rgb(60, 42, 129) |
| HSL | hsl(252, 51%, 34%) |
| OKLCH | oklch(36.1% 0.139 286.7) |
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 #3C2A81 | 11.41:1 | AAA | Lc -99.6 | Preferred for body text |
| Black text on #3C2A81 | 1.84:1 | Fails | Lc 8.1 | Not readable |
| #3C2A81 text on white | 11.41:1 | AAA | Lc 95.8 | Preferred for body text |
| #3C2A81 text on black | 1.84:1 | 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
#F4F4FF
oklch(97% 0.015 286.1)
-
Step 100
100
#E8E7FE
oklch(93.6% 0.031 287.8)
-
Step 200
200
#D6D4FE
oklch(88.5% 0.058 287.3)
-
Step 300
300
#BBB7FF
oklch(80.9% 0.101 286.5)
-
Step 400
400
#9B8EFF
oklch(70.7% 0.161 286.8)
-
Step 500
500
#856CFF
oklch(63.1% 0.209 286.6)
-
Step 600
600
#724CF0
oklch(55.6% 0.231 286.9)
-
Step 700
700
#603BD1
oklch(49.1% 0.215 286.8)
-
Step 800
800
#4E33A9
oklch(42.8% 0.178 286.8)
-
Step 900
900 (this color)
#3C2A81
oklch(36.1% 0.139 286.7)
-
Step 950
950
#251C4E
oklch(26.9% 0.088 287.2)
#3C2A81 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) | #003C84 | 0.070 |
| Deuteranopia (no green cones) | #00377F | 0.067 |
| Tritanopia (no blue cones) | #223F51 | 0.114 |
| Achromatopsia (no color) | #3A3A3A | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C2A81
#3C2A81
oklch(36.1% 0.139 286.7)
- #434000
#434000
oklch(36.3% 0.078 106.7)
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 #3C2A81, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.055
- Indigo #4B0082 ΔE 0.062
- Blueberry #464196 ΔE 0.068
- Imperial Purple #480CA8 ΔE 0.074
- Royal Purple #4B006E ΔE 0.076
- Twilight Blue #0A437A ΔE 0.080
- Midnight Blue #191970 ΔE 0.081
- Cobalt #1E488F ΔE 0.081
Use #3C2A81 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.