#3C306D
Closest named color: Dark Slate Blue (#483D8B). oklch(35.6% 0.102 289.2), rgb(60, 48, 109).
Aa
White text reads best on this color (11.43:1).
About this color
#3C306D is a dark, moderately saturated purple. In OKLCH its lightness is 36%, its chroma 0.102 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.063 away. White text reads best on it, at 11.43:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.83:1 |
| White text | 11.43:1 |
Values
| HEX | #3C306D |
| RGB | rgb(60, 48, 109) |
| HSL | hsl(252, 39%, 31%) |
| OKLCH | oklch(35.6% 0.102 289.2) |
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 #3C306D | 11.43:1 | AAA | Lc -99.9 | Preferred for body text |
| Black text on #3C306D | 1.83:1 | Fails | Lc 7.7 | Not readable |
| #3C306D text on white | 11.43:1 | AAA | Lc 96.2 | Preferred for body text |
| #3C306D text on black | 1.83:1 | 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
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#E9E8F8
oklch(93.6% 0.021 288.9)
-
Step 200
200
#D8D5F4
oklch(88.5% 0.042 289.9)
-
Step 300
300
#BFB9EF
oklch(80.9% 0.076 289.7)
-
Step 400
400
#9F93E8
oklch(70.7% 0.123 289.3)
-
Step 500
500
#8976E1
oklch(63.2% 0.156 289.3)
-
Step 600
600
#745CCE
oklch(55.6% 0.169 289.4)
-
Step 700
700
#614BB3
oklch(49.1% 0.158 289)
-
Step 800
800
#4F3E91
oklch(42.7% 0.131 289)
-
Step 900
900 (this color)
#3C306D
oklch(35.6% 0.102 289.2)
-
Step 950
950
#262044
oklch(27% 0.065 288.9)
#3C306D 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) | #133B6F | 0.057 |
| Deuteranopia (no green cones) | #14386C | 0.055 |
| Tritanopia (no blue cones) | #2E3D49 | 0.085 |
| Achromatopsia (no color) | #3A3A3A | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C306D
#3C306D
oklch(35.6% 0.102 289.2)
- #3F3F00
#3F3F00
oklch(35.6% 0.078 109.8)
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 #3C306D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.063
- Prussian Blue #1D3557 ΔE 0.064
- Marine Blue #01386A ΔE 0.066
- Twilight Blue #0A437A ΔE 0.071
- Marine #042E60 ΔE 0.075
- Blueberry #464196 ΔE 0.081
- Dark Grey Blue #29465B ΔE 0.082
- Space Cadet #2B2D42 ΔE 0.082
Use #3C306D 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.