#3C396C
Closest named color: Dark Slate Blue (#483D8B). oklch(37.4% 0.086 284.1), rgb(60, 57, 108).
Aa
White text reads best on this color (10.53:1).
About this color
#3C396C is a dark, moderately saturated purple. In OKLCH its lightness is 37%, its chroma 0.086 and its hue 284°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.057 away. White text reads best on it, at 10.53:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.99:1 |
| White text | 10.53:1 |
Values
| HEX | #3C396C |
| RGB | rgb(60, 57, 108) |
| HSL | hsl(244, 31%, 32%) |
| OKLCH | oklch(37.4% 0.086 284.1) |
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 #3C396C | 10.53:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #3C396C | 1.99:1 | Fails | Lc 9.6 | Not readable |
| #3C396C text on white | 10.53:1 | AAA | Lc 94.3 | Preferred for body text |
| #3C396C text on black | 1.99:1 | Fails | Lc -8.3 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E8E8F6
oklch(93.5% 0.019 286)
-
Step 200
200
#D6D7F1
oklch(88.6% 0.036 283.9)
-
Step 300
300
#BBBCE9
oklch(81% 0.063 283.9)
-
Step 400
400
#9998DF
oklch(70.8% 0.103 284.1)
-
Step 500
500
#817DD5
oklch(63.2% 0.13 284.1)
-
Step 600
600
#6B64C3
oklch(55.6% 0.143 284)
-
Step 700
700
#5A53A8
oklch(49.2% 0.132 284.2)
-
Step 800
800
#494488
oklch(42.7% 0.11 284.1)
-
Step 900
900 (this color)
#3C396C
oklch(37.4% 0.086 284.1)
-
Step 950
950
#232240
oklch(26.9% 0.055 283.6)
#3C396C 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) | #26416E | 0.036 |
| Deuteranopia (no green cones) | #243D6B | 0.035 |
| Tritanopia (no blue cones) | #2E434D | 0.072 |
| Achromatopsia (no color) | #3F3F3F | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C396C
#3C396C
oklch(37.4% 0.086 284.1)
- #484200
#484200
oklch(37.3% 0.079 103.7)
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 #3C396C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.057
- Twilight Blue #0A437A ΔE 0.057
- Dark Grey Blue #29465B ΔE 0.060
- Prussian Blue #1D3557 ΔE 0.061
- Marine Blue #01386A ΔE 0.064
- Dark Blue Grey #1F3B4D ΔE 0.072
- Cobalt #1E488F ΔE 0.072
- Charcoal #264653 ΔE 0.073
Use #3C396C 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.