#3FA6FF
Closest named color: Chefchaouen Blue (#4895EF). oklch(70.7% 0.161 248.5), rgb(63, 166, 255).
Aa
Black text reads best on this color (8.10:1).
About this color
#3FA6FF is a medium-light, vivid blue. In OKLCH its lightness is 71%, its chroma 0.161 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.046 away. Black text reads best on it, at 8.10:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.161) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 8.10:1 |
| White text | 2.58:1 |
Values
| HEX | #3FA6FF |
| RGB | rgb(63, 166, 255) |
| HSL | hsl(208, 100%, 62%) |
| OKLCH | oklch(70.7% 0.161 248.5) |
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 #3FA6FF | 2.58:1 | Fails | Lc -55.3 | Large or bold text, headings |
| Black text on #3FA6FF | 8.10:1 | AAA | Lc 53.8 | Large or bold text, headings |
| #3FA6FF text on white | 2.58:1 | Fails | Lc 50.2 | Large or bold text, headings |
| #3FA6FF text on black | 8.10:1 | AAA | Lc -51.7 | Large or bold text, headings |
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 400.
-
Step 50
50
#EFF6FE
oklch(97% 0.013 251.6)
-
Step 100
100
#DBECFD
oklch(93.6% 0.029 248.1)
-
Step 200
200
#BDDDFD
oklch(88.5% 0.056 248.5)
-
Step 300
300
#8CC6FF
oklch(80.8% 0.101 248.7)
-
Step 400
400 (this color)
#3FA6FF
oklch(70.7% 0.161 248.5)
-
Step 500
500
#008DEB
oklch(63% 0.172 248.6)
-
Step 600
600
#0077C7
oklch(55.7% 0.152 248.5)
-
Step 700
700
#0064A8
oklch(49.2% 0.133 248.3)
-
Step 800
800
#00518B
oklch(42.6% 0.117 248.8)
-
Step 900
900
#004475
oklch(37.8% 0.103 248.3)
-
Step 950
950
#002848
oklch(27% 0.073 248.1)
#3FA6FF 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) | #7DABFF | 0.057 |
| Deuteranopia (no green cones) | #6199FD | 0.039 |
| Tritanopia (no blue cones) | #00BBC6 | 0.117 |
| Achromatopsia (no color) | #A1A1A1 | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FA6FF
#3FA6FF
oklch(70.7% 0.161 248.5)
- #DE8B00
#DE8B00
oklch(70.7% 0.155 68.3)
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 #3FA6FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.046
- Cornflower Blue #6495ED ΔE 0.050
- Dodger Blue #1E90FF ΔE 0.064
- Deep Sky Blue #00BFFF ΔE 0.067
- Dark Sky Blue #448EE4 ΔE 0.069
- Periwinkle Blue #8F99FB ΔE 0.079
- Soft Blue #6488EA ΔE 0.079
- Carolina Blue #8AB8FE ΔE 0.088
Use #3FA6FF 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.