#3F4193
Closest named color: Blueberry (#464196). oklch(42.1% 0.132 278), rgb(63, 65, 147).
Aa
White text reads best on this color (8.79:1).
About this color
#3F4193 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.132 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.012 away. White text reads best on it, at 8.79:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.38:1 |
| White text | 8.79:1 |
Values
| HEX | #3F4193 |
| RGB | rgb(63, 65, 147) |
| HSL | hsl(239, 40%, 41%) |
| OKLCH | oklch(42.1% 0.132 278) |
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 #3F4193 | 8.79:1 | AAA | Lc -94.3 | Preferred for body text |
| Black text on #3F4193 | 2.38:1 | Fails | Lc 14.2 | Not readable |
| #3F4193 text on white | 8.79:1 | AAA | Lc 89.8 | Fine for body text |
| #3F4193 text on black | 2.38:1 | Fails | Lc -12.5 | 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 800.
-
Step 50
50
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E6E9F9
oklch(93.6% 0.022 277.5)
-
Step 200
200
#D2D7F6
oklch(88.5% 0.043 278.2)
-
Step 300
300
#B4BCF3
oklch(80.8% 0.078 278.1)
-
Step 400
400
#8F98EC
oklch(70.7% 0.123 278.1)
-
Step 500
500
#757CE6
oklch(63.1% 0.157 278)
-
Step 600
600
#5F63D5
oklch(55.7% 0.172 277.7)
-
Step 700
700
#4F51B8
oklch(49.1% 0.159 278)
-
Step 800
800 (this color)
#3F4193
oklch(42.1% 0.132 278)
-
Step 900
900
#363977
oklch(37.6% 0.104 278.1)
-
Step 950
950
#202246
oklch(27.1% 0.066 278.6)
#3F4193 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) | #0B4E96 | 0.053 |
| Deuteranopia (no green cones) | #004791 | 0.054 |
| Tritanopia (no blue cones) | #125463 | 0.116 |
| Achromatopsia (no color) | #4B4B4B | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F4193
#3F4193
oklch(42.1% 0.132 278)
- #5A4D00
#5A4D00
oklch(42.1% 0.087 98)
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 #3F4193, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.012
- Dark Slate Blue #483D8B ΔE 0.020
- Cobalt #1E488F ΔE 0.041
- Twilight #4E518B ΔE 0.055
- Dusk Blue #26538D ΔE 0.056
- Sapphire #2138AB ΔE 0.061
- Light Navy #155084 ΔE 0.064
- Twilight Blue #0A437A ΔE 0.070
Use #3F4193 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.