#3F4C93
Closest named color: Blueberry (#464196). oklch(44.3% 0.117 273), rgb(63, 76, 147).
Aa
White text reads best on this color (7.87:1).
About this color
#3F4C93 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.117 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.030 away. White text reads best on it, at 7.87:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.66:1 |
| White text | 7.87:1 |
Values
| HEX | #3F4C93 |
| RGB | rgb(63, 76, 147) |
| HSL | hsl(231, 40%, 41%) |
| OKLCH | oklch(44.3% 0.117 273) |
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 #3F4C93 | 7.87:1 | AAA | Lc -91.9 | Preferred for body text |
| Black text on #3F4C93 | 2.66:1 | Fails | Lc 16.9 | Dividers and decoration only |
| #3F4C93 text on white | 7.87:1 | AAA | Lc 87.1 | Fine for body text |
| #3F4C93 text on black | 2.66:1 | Fails | Lc -15.0 | 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
#D0D8F3
oklch(88.5% 0.038 272.5)
-
Step 300
300
#B2BEED
oklch(80.8% 0.068 273.6)
-
Step 400
400
#8A9CE5
oklch(70.8% 0.109 272.8)
-
Step 500
500
#6E81DD
oklch(63% 0.14 273)
-
Step 600
600
#5769CB
oklch(55.6% 0.152 272.7)
-
Step 700
700
#4857AF
oklch(49.1% 0.14 272.9)
-
Step 800
800 (this color)
#3F4C93
oklch(44.3% 0.117 273)
-
Step 900
900
#323C71
oklch(37.6% 0.091 273.2)
-
Step 950
950
#1D2442
oklch(27% 0.057 272.2)
#3F4C93 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) | #2B5596 | 0.031 |
| Deuteranopia (no green cones) | #1F4E91 | 0.034 |
| Tritanopia (no blue cones) | #0F5C68 | 0.104 |
| Achromatopsia (no color) | #515151 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F4C93
#3F4C93
oklch(44.3% 0.117 273)
- #655100
#655100
oklch(44.3% 0.091 92.3)
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 #3F4C93, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.030
- Twilight #4E518B ΔE 0.031
- Dusk Blue #26538D ΔE 0.034
- Dark Slate Blue #483D8B ΔE 0.041
- Cobalt #1E488F ΔE 0.041
- Denim Blue #3B5B92 ΔE 0.043
- Dusk #4E5481 ΔE 0.047
- Light Navy Blue #2E5A88 ΔE 0.049
Use #3F4C93 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.