#3F93F3
Closest named color: Chefchaouen Blue (#4895EF). oklch(65.9% 0.164 254), rgb(63, 147, 243).
Aa
Black text reads best on this color (6.67:1).
About this color
#3F93F3 is a medium-light, vivid blue. In OKLCH its lightness is 66%, its chroma 0.164 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.011 away. Black text reads best on it, at 6.67:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.164) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 6.67:1 |
| White text | 3.14:1 |
Values
| HEX | #3F93F3 |
| RGB | rgb(63, 147, 243) |
| HSL | hsl(212, 88%, 60%) |
| OKLCH | oklch(65.9% 0.164 254) |
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 #3F93F3 | 3.14:1 | AA large text | Lc -63.5 | Content text, not long reading |
| Black text on #3F93F3 | 6.67:1 | AA | Lc 45.9 | Large or bold text, headings |
| #3F93F3 text on white | 3.14:1 | AA large text | Lc 58.1 | Large or bold text, headings |
| #3F93F3 text on black | 6.67:1 | AA | Lc -43.6 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C5DBF7
oklch(88.4% 0.045 254.5)
-
Step 300
300
#9DC4F4
oklch(80.9% 0.08 253.9)
-
Step 400
400
#65A3EF
oklch(70.6% 0.129 254.4)
-
Step 500
500 (this color)
#3F93F3
oklch(65.9% 0.164 254)
-
Step 600
600
#0072D7
oklch(55.6% 0.177 254)
-
Step 700
700
#005FB6
oklch(49% 0.157 254.2)
-
Step 800
800
#004E97
oklch(42.8% 0.136 254.1)
-
Step 900
900
#0E4278
oklch(37.8% 0.106 253.5)
-
Step 950
950
#0B2747
oklch(27.1% 0.068 254.1)
#3F93F3 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) | #659AF7 | 0.041 |
| Deuteranopia (no green cones) | #488AF1 | 0.023 |
| Tritanopia (no blue cones) | #00AAB7 | 0.126 |
| Achromatopsia (no color) | #919191 | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F93F3
#3F93F3
oklch(65.9% 0.164 254)
- #C48200
#C48200
oklch(65.8% 0.14 73.5)
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 #3F93F3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.011
- Dark Sky Blue #448EE4 ΔE 0.024
- Dodger Blue #1E90FF ΔE 0.027
- Cornflower Blue #6495ED ΔE 0.034
- Soft Blue #6488EA ΔE 0.040
- Water Blue #0E87CC ΔE 0.071
- Clear Blue #247AFD ΔE 0.073
- Cornflower #6A79F7 ΔE 0.073
Use #3F93F3 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.