#3F4B96
Closest named color: Blueberry (#464196). oklch(44.3% 0.123 273.5), rgb(63, 75, 150).
Aa
White text reads best on this color (7.90:1).
About this color
#3F4B96 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.123 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.027 away. White text reads best on it, at 7.90:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.65:1 |
| White text | 7.90:1 |
Values
| HEX | #3F4B96 |
| RGB | rgb(63, 75, 150) |
| HSL | hsl(232, 41%, 42%) |
| OKLCH | oklch(44.3% 0.123 273.5) |
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 #3F4B96 | 7.90:1 | AAA | Lc -91.9 | Preferred for body text |
| Black text on #3F4B96 | 2.65:1 | Fails | Lc 16.8 | Dividers and decoration only |
| #3F4B96 text on white | 7.90:1 | AAA | Lc 87.2 | Fine for body text |
| #3F4B96 text on black | 2.65:1 | Fails | Lc -14.9 | 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
#E5E9F8
oklch(93.5% 0.021 274)
-
Step 200
200
#D0D8F4
oklch(88.5% 0.04 272.9)
-
Step 300
300
#B1BEF0
oklch(80.9% 0.072 273.3)
-
Step 400
400
#8A9BE8
oklch(70.7% 0.114 273.6)
-
Step 500
500
#6E80E1
oklch(63.1% 0.147 273.6)
-
Step 600
600
#5867CF
oklch(55.6% 0.16 273.9)
-
Step 700
700
#4855B3
oklch(49% 0.148 273.7)
-
Step 800
800 (this color)
#3F4B96
oklch(44.3% 0.123 273.5)
-
Step 900
900
#323C74
oklch(37.8% 0.096 273.3)
-
Step 950
950
#1D2344
oklch(26.9% 0.062 273.8)
#3F4B96 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) | #265599 | 0.035 |
| Deuteranopia (no green cones) | #184E94 | 0.039 |
| Tritanopia (no blue cones) | #085C69 | 0.109 |
| Achromatopsia (no color) | #515151 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F4B96
#3F4B96
oklch(44.3% 0.123 273.5)
- #645200
#645200
oklch(44.4% 0.091 94.3)
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 #3F4B96, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.027
- Twilight #4E518B ΔE 0.035
- Dusk Blue #26538D ΔE 0.038
- Dark Slate Blue #483D8B ΔE 0.039
- Cobalt #1E488F ΔE 0.041
- Denim Blue #3B5B92 ΔE 0.046
- Dusk #4E5481 ΔE 0.052
- Light Navy #155084 ΔE 0.054
Use #3F4B96 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.