#3F4CA2
Closest named color: Blueberry (#464196). oklch(45.4% 0.139 273.1), rgb(63, 76, 162).
Aa
White text reads best on this color (7.58:1).
About this color
#3F4CA2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.139 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.033 away. White text reads best on it, at 7.58:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.76:1 |
| White text | 7.58:1 |
Values
| HEX | #3F4CA2 |
| RGB | rgb(63, 76, 162) |
| HSL | hsl(232, 44%, 44%) |
| OKLCH | oklch(45.4% 0.139 273.1) |
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 #3F4CA2 | 7.58:1 | AAA | Lc -90.9 | Preferred for body text |
| Black text on #3F4CA2 | 2.76:1 | Fails | Lc 17.9 | Dividers and decoration only |
| #3F4CA2 text on white | 7.58:1 | AAA | Lc 86.1 | Fine for body text |
| #3F4CA2 text on black | 2.76:1 | Fails | Lc -16.0 | Dividers and decoration only |
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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9FA
oklch(93.5% 0.024 272.8)
-
Step 200
200
#CFD8F8
oklch(88.5% 0.045 273)
-
Step 300
300
#AFBEF6
oklch(81% 0.081 272.8)
-
Step 400
400
#869AF1
oklch(70.7% 0.129 272.9)
-
Step 500
500
#6A7EEC
oklch(63.1% 0.165 273)
-
Step 600
600
#5464DB
oklch(55.6% 0.181 273.2)
-
Step 700
700
#4552BE
oklch(49.1% 0.168 273.3)
-
Step 800
800 (this color)
#3F4CA2
oklch(45.4% 0.139 273.1)
-
Step 900
900
#303A7A
oklch(37.6% 0.109 273.4)
-
Step 950
950
#1C2347
oklch(27.1% 0.067 272.9)
#3F4CA2 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) | #1958A5 | 0.043 |
| Deuteranopia (no green cones) | #0050A0 | 0.047 |
| Tritanopia (no blue cones) | #00606F | 0.121 |
| Achromatopsia (no color) | #545454 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F4CA2
#3F4CA2
oklch(45.4% 0.139 273.1)
- #685400
#685400
oklch(45.3% 0.093 92.9)
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 #3F4CA2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.033
- Twilight #4E518B ΔE 0.047
- Dusk Blue #26538D ΔE 0.049
- Cobalt #1E488F ΔE 0.051
- Dark Slate Blue #483D8B ΔE 0.051
- Denim Blue #3B5B92 ΔE 0.052
- Dusky Blue #475F94 ΔE 0.063
- Light Navy Blue #2E5A88 ΔE 0.065
Use #3F4CA2 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.