#39387C
Closest named color: Dark Slate Blue (#483D8B). oklch(38% 0.112 280.3), rgb(57, 56, 124).
Aa
White text reads best on this color (10.34:1).
About this color
#39387C is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.112 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.038 away. White text reads best on it, at 10.34:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.03:1 |
| White text | 10.34:1 |
Values
| HEX | #39387C |
| RGB | rgb(57, 56, 124) |
| HSL | hsl(241, 38%, 35%) |
| OKLCH | oklch(38% 0.112 280.3) |
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 #39387C | 10.34:1 | AAA | Lc -97.8 | Preferred for body text |
| Black text on #39387C | 2.03:1 | Fails | Lc 10.2 | Not readable |
| #39387C text on white | 10.34:1 | AAA | Lc 93.8 | Preferred for body text |
| #39387C text on black | 2.03:1 | Fails | Lc -8.8 | 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
#E6E8FA
oklch(93.5% 0.024 280.9)
-
Step 200
200
#D3D6F8
oklch(88.5% 0.047 281.4)
-
Step 300
300
#B6BBF7
oklch(80.9% 0.085 280.6)
-
Step 400
400
#9196F3
oklch(70.8% 0.135 280)
-
Step 500
500
#7878EE
oklch(63% 0.173 280.2)
-
Step 600
600
#635EDC
oklch(55.6% 0.187 280.2)
-
Step 700
700
#534CBF
oklch(49% 0.174 280.5)
-
Step 800
800
#433F9B
oklch(42.6% 0.145 280.2)
-
Step 900
900 (this color)
#39387C
oklch(38% 0.112 280.3)
-
Step 950
950
#212148
oklch(27.1% 0.071 280.6)
#39387C 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) | #13437E | 0.048 |
| Deuteranopia (no green cones) | #0A3E7B | 0.049 |
| Tritanopia (no blue cones) | #1D4754 | 0.097 |
| Achromatopsia (no color) | #404040 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #39387C
#39387C
oklch(38% 0.112 280.3)
- #4C4300
#4C4300
oklch(38% 0.079 100.7)
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 #39387C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.038
- Twilight Blue #0A437A ΔE 0.053
- Blueberry #464196 ΔE 0.053
- Cobalt #1E488F ΔE 0.055
- Marine Blue #01386A ΔE 0.067
- Light Navy #155084 ΔE 0.071
- Dusk Blue #26538D ΔE 0.077
- Prussian Blue #1D3557 ΔE 0.077
Use #39387C 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.