#3C387B
Closest named color: Dark Slate Blue (#483D8B). oklch(38.2% 0.11 282.5), rgb(60, 56, 123).
Aa
White text reads best on this color (10.27:1).
About this color
#3C387B is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.110 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.036 away. White text reads best on it, at 10.27:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.04:1 |
| White text | 10.27:1 |
Values
| HEX | #3C387B |
| RGB | rgb(60, 56, 123) |
| HSL | hsl(244, 37%, 35%) |
| OKLCH | oklch(38.2% 0.11 282.5) |
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 #3C387B | 10.27:1 | AAA | Lc -97.7 | Preferred for body text |
| Black text on #3C387B | 2.04:1 | Fails | Lc 10.3 | Not readable |
| #3C387B text on white | 10.27:1 | AAA | Lc 93.6 | Preferred for body text |
| #3C387B text on black | 2.04:1 | Fails | Lc -8.9 | 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
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E7E8FA
oklch(93.6% 0.024 283.4)
-
Step 200
200
#D4D6F7
oklch(88.5% 0.045 282.7)
-
Step 300
300
#B8BAF5
oklch(80.8% 0.083 282.9)
-
Step 400
400
#9595F0
oklch(70.7% 0.132 282.5)
-
Step 500
500
#7D77EB
oklch(63% 0.169 282.7)
-
Step 600
600
#685DD9
oklch(55.6% 0.183 282.7)
-
Step 700
700
#574CBD
oklch(49.2% 0.171 282.5)
-
Step 800
800
#473F99
oklch(42.8% 0.142 282.6)
-
Step 900
900 (this color)
#3C387B
oklch(38.2% 0.11 282.5)
-
Step 950
950
#222147
oklch(27.1% 0.069 282)
#3C387B 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) | #16437D | 0.050 |
| Deuteranopia (no green cones) | #113E7A | 0.050 |
| Tritanopia (no blue cones) | #254754 | 0.094 |
| Achromatopsia (no color) | #414141 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C387B
#3C387B
oklch(38.2% 0.11 282.5)
- #4B4400
#4B4400
oklch(38.2% 0.08 102.8)
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 #3C387B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.036
- Blueberry #464196 ΔE 0.052
- Twilight Blue #0A437A ΔE 0.056
- Cobalt #1E488F ΔE 0.058
- Marine Blue #01386A ΔE 0.070
- Light Navy #155084 ΔE 0.073
- Dusk Blue #26538D ΔE 0.078
- Prussian Blue #1D3557 ΔE 0.079
Use #3C387B 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.