#3E3570
Closest named color: Dark Slate Blue (#483D8B). oklch(37% 0.098 287.6), rgb(62, 53, 112).
Aa
White text reads best on this color (10.78:1).
About this color
#3E3570 is a dark, moderately saturated purple. In OKLCH its lightness is 37%, its chroma 0.098 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.052 away. White text reads best on it, at 10.78:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.94:1 |
| White text | 10.78:1 |
Values
| HEX | #3E3570 |
| RGB | rgb(62, 53, 112) |
| HSL | hsl(249, 36%, 32%) |
| OKLCH | oklch(37% 0.098 287.6) |
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 #3E3570 | 10.78:1 | AAA | Lc -98.7 | Preferred for body text |
| Black text on #3E3570 | 1.94:1 | Fails | Lc 9.1 | Not readable |
| #3E3570 text on white | 10.78:1 | AAA | Lc 94.8 | Preferred for body text |
| #3E3570 text on black | 1.94:1 | Fails | Lc -7.8 | 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
#F5F5FC
oklch(97.2% 0.009 286.2)
-
Step 100
100
#E9E8F8
oklch(93.6% 0.021 288.9)
-
Step 200
200
#D7D6F3
oklch(88.6% 0.04 287.1)
-
Step 300
300
#BDBAEE
oklch(80.9% 0.073 287.3)
-
Step 400
400
#9D94E6
oklch(70.7% 0.118 288)
-
Step 500
500
#8678DE
oklch(63.1% 0.15 287.6)
-
Step 600
600
#715ECC
oklch(55.6% 0.164 287.8)
-
Step 700
700
#5F4DB1
oklch(49.2% 0.153 287.7)
-
Step 800
800
#4D408F
oklch(42.7% 0.126 287.4)
-
Step 900
900 (this color)
#3E3570
oklch(37% 0.098 287.6)
-
Step 950
950
#252143
oklch(27.1% 0.062 286.9)
#3E3570 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) | #1C3F72 | 0.050 |
| Deuteranopia (no green cones) | #1C3C6F | 0.048 |
| Tritanopia (no blue cones) | #2F414D | 0.082 |
| Achromatopsia (no color) | #3D3D3D | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3E3570
#3E3570
oklch(37% 0.098 287.6)
- #444200
#444200
oklch(36.9% 0.079 107.8)
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 #3E3570, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.052
- Twilight Blue #0A437A ΔE 0.064
- Prussian Blue #1D3557 ΔE 0.067
- Marine Blue #01386A ΔE 0.068
- Blueberry #464196 ΔE 0.070
- Dark Grey Blue #29465B ΔE 0.074
- Cobalt #1E488F ΔE 0.074
- Dark Blue Grey #1F3B4D ΔE 0.083
Use #3E3570 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.