#3F5686
Closest named color: Light Navy Blue (#2E5A88). oklch(45.7% 0.084 263.9), rgb(63, 86, 134).
Aa
White text reads best on this color (7.27:1).
About this color
#3F5686 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.084 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.020 away. White text reads best on it, at 7.27:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.88:1 |
| White text | 7.27:1 |
Values
| HEX | #3F5686 |
| RGB | rgb(63, 86, 134) |
| HSL | hsl(221, 36%, 39%) |
| OKLCH | oklch(45.7% 0.084 263.9) |
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 #3F5686 | 7.27:1 | AAA | Lc -90.0 | Preferred for body text |
| Black text on #3F5686 | 2.88:1 | Fails | Lc 18.9 | Dividers and decoration only |
| #3F5686 text on white | 7.27:1 | AAA | Lc 85.2 | Fine for body text |
| #3F5686 text on black | 2.88:1 | Fails | Lc -16.9 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#D0D9EC
oklch(88.4% 0.028 265.4)
-
Step 300
300
#B1C1E1
oklch(80.9% 0.049 264.3)
-
Step 400
400
#88A0D2
oklch(70.6% 0.078 264.6)
-
Step 500
500
#6A88C6
oklch(63% 0.1 264)
-
Step 600
600
#5271B3
oklch(55.5% 0.109 264.1)
-
Step 700
700
#435F9A
oklch(49.2% 0.101 263.9)
-
Step 800
800 (this color)
#3F5686
oklch(45.7% 0.084 263.9)
-
Step 900
900
#304164
oklch(37.8% 0.064 263.8)
-
Step 950
950
#1C263B
oklch(27% 0.042 264.3)
#3F5686 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) | #435A88 | 0.013 |
| Deuteranopia (no green cones) | #3B5485 | 0.008 |
| Tritanopia (no blue cones) | #1E6067 | 0.075 |
| Achromatopsia (no color) | #575757 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F5686
#3F5686
oklch(45.7% 0.084 263.9)
- #6D5315
#6D5315
oklch(45.8% 0.084 84.6)
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 #3F5686, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.020
- Dusk #4E5481 ΔE 0.021
- Denim Blue #3B5B92 ΔE 0.022
- Twilight #4E518B ΔE 0.026
- YInMn Blue #415A77 ΔE 0.031
- Dusk Blue #26538D ΔE 0.032
- Dusky Blue #475F94 ΔE 0.034
- Denim #3B638C ΔE 0.037
Use #3F5686 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.