#3F4293
Closest named color: Blueberry (#464196). oklch(42.3% 0.131 277.6), rgb(63, 66, 147).
Aa
White text reads best on this color (8.70:1).
About this color
#3F4293 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.131 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 8.70:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.131) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.41:1 |
| White text | 8.70:1 |
Values
| HEX | #3F4293 |
| RGB | rgb(63, 66, 147) |
| HSL | hsl(238, 40%, 41%) |
| OKLCH | oklch(42.3% 0.131 277.6) |
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 #3F4293 | 8.70:1 | AAA | Lc -94.1 | Preferred for body text |
| Black text on #3F4293 | 2.41:1 | Fails | Lc 14.4 | Not readable |
| #3F4293 text on white | 8.70:1 | AAA | Lc 89.6 | Fine for body text |
| #3F4293 text on black | 2.41:1 | Fails | Lc -12.7 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
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
#B4BDF2
oklch(81% 0.076 277.1)
-
Step 400
400
#8E98EC
oklch(70.6% 0.123 277.6)
-
Step 500
500
#757DE6
oklch(63.2% 0.156 277.7)
-
Step 600
600
#5F63D4
oklch(55.6% 0.17 277.8)
-
Step 700
700
#4E51B7
oklch(49% 0.158 277.6)
-
Step 800
800 (this color)
#3F4293
oklch(42.3% 0.131 277.6)
-
Step 900
900
#363A76
oklch(37.8% 0.101 277.5)
-
Step 950
950
#1F2245
oklch(26.9% 0.064 277.4)
#3F4293 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) | #104F96 | 0.052 |
| Deuteranopia (no green cones) | #004891 | 0.054 |
| Tritanopia (no blue cones) | #125564 | 0.114 |
| Achromatopsia (no color) | #4B4B4B | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F4293
#3F4293
oklch(42.3% 0.131 277.6)
- #5B4D00
#5B4D00
oklch(42.2% 0.087 97.1)
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 #3F4293, 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 0.021
- Cobalt #1E488F ΔE 0.040
- Twilight #4E518B ΔE 0.053
- Dusk Blue #26538D ΔE 0.054
- Sapphire #2138AB ΔE 0.062
- Light Navy #155084 ΔE 0.062
- Dusk #4E5481 ΔE 0.069
Use #3F4293 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.