#3F85DF
Closest named color: Dark Sky Blue (#448EE4). oklch(61.6% 0.154 255.9), rgb(63, 133, 223).
Aa
Black text reads best on this color (5.63:1).
About this color
#3F85DF is a medium-dark, vivid blue. In OKLCH its lightness is 62%, its chroma 0.154 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.025 away. Black text reads best on it, at 5.63:1.
| Hue family | Blues |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.154) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.63:1 |
| White text | 3.72:1 |
Values
| HEX | #3F85DF |
| RGB | rgb(63, 133, 223) |
| HSL | hsl(214, 71%, 56%) |
| OKLCH | oklch(61.6% 0.154 255.9) |
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 #3F85DF | 3.72:1 | AA large text | Lc -70.0 | Content text, not long reading |
| Black text on #3F85DF | 5.63:1 | AA | Lc 39.6 | Non-text elements, placeholder text |
| #3F85DF text on white | 3.72:1 | AA large text | Lc 64.5 | Content text, not long reading |
| #3F85DF text on black | 5.63:1 | AA | Lc -37.2 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF9
oklch(93.7% 0.022 256.7)
-
Step 200
200
#C8DBF5
oklch(88.5% 0.041 256.2)
-
Step 300
300
#A1C3F1
oklch(80.8% 0.075 256.1)
-
Step 400
400
#6DA3EA
oklch(70.7% 0.119 255.7)
-
Step 500
500 (this color)
#3F85DF
oklch(61.6% 0.154 255.9)
-
Step 600
600
#2171D2
oklch(55.5% 0.167 256.1)
-
Step 700
700
#125EB6
oklch(49% 0.156 256.1)
-
Step 800
800
#134E93
oklch(42.8% 0.128 255.6)
-
Step 900
900
#184175
oklch(37.6% 0.1 256)
-
Step 950
950
#0F2745
oklch(27.1% 0.064 255.3)
#3F85DF 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) | #5A8CE3 | 0.034 |
| Deuteranopia (no green cones) | #407DDD | 0.021 |
| Tritanopia (no blue cones) | #009AA7 | 0.120 |
| Achromatopsia (no color) | #848484 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F85DF
#3F85DF
oklch(61.6% 0.154 255.9)
- #B17800
#B17800
oklch(61.6% 0.13 75.7)
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 #3F85DF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.025
- Water Blue #0E87CC ΔE 0.040
- Soft Blue #6488EA ΔE 0.042
- Chefchaouen Blue #4895EF ΔE 0.048
- Dodger Blue #1E90FF ΔE 0.052
- Windows Blue #3778BF ΔE 0.057
- Clear Blue #247AFD ΔE 0.060
- Cool Blue #4984B8 ΔE 0.060
Use #3F85DF 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.