#3E3979
Closest named color: Dark Slate Blue (#483D8B). oklch(38.5% 0.105 283.8), rgb(62, 57, 121).
Aa
White text reads best on this color (10.16:1).
About this color
#3E3979 is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.105 and its hue 284°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.036 away. White text reads best on it, at 10.16:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.06:1 |
| White text | 10.16:1 |
Values
| HEX | #3E3979 |
| RGB | rgb(62, 57, 121) |
| HSL | hsl(245, 36%, 35%) |
| OKLCH | oklch(38.5% 0.105 283.8) |
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 #3E3979 | 10.16:1 | AAA | Lc -97.5 | Preferred for body text |
| Black text on #3E3979 | 2.06:1 | Fails | Lc 10.5 | Not readable |
| #3E3979 text on white | 10.16:1 | AAA | Lc 93.4 | Preferred for body text |
| #3E3979 text on black | 2.06:1 | Fails | Lc -9.1 | 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
#E7E8F9
oklch(93.5% 0.023 283.3)
-
Step 200
200
#D5D6F6
oklch(88.5% 0.044 284)
-
Step 300
300
#BABAF3
oklch(80.9% 0.08 284.5)
-
Step 400
400
#9795EC
oklch(70.7% 0.126 283.7)
-
Step 500
500
#7F78E6
oklch(63% 0.161 283.6)
-
Step 600
600
#6A5ED5
oklch(55.6% 0.176 283.6)
-
Step 700
700
#594DB8
oklch(49.2% 0.163 283.7)
-
Step 800
800
#484095
oklch(42.7% 0.135 283.4)
-
Step 900
900 (this color)
#3E3979
oklch(38.5% 0.105 283.8)
-
Step 950
950
#232146
oklch(27.1% 0.067 283.4)
#3E3979 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) | #1B437B | 0.048 |
| Deuteranopia (no green cones) | #183F78 | 0.048 |
| Tritanopia (no blue cones) | #2A4753 | 0.091 |
| Achromatopsia (no color) | #414141 | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3E3979
#3E3979
oklch(38.5% 0.105 283.8)
- #4B4500
#4B4500
oklch(38.4% 0.081 103.9)
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 #3E3979, 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 0.053
- Twilight Blue #0A437A ΔE 0.057
- Cobalt #1E488F ΔE 0.060
- Marine Blue #01386A ΔE 0.072
- Light Navy #155084 ΔE 0.072
- Twilight #4E518B ΔE 0.076
- Dark Grey Blue #29465B ΔE 0.077
Use #3E3979 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.