#3F83F7
Closest named color: Clear Blue (#247AFD). oklch(62.7% 0.187 260.4), rgb(63, 131, 247).
Aa
Black text reads best on this color (5.80:1).
About this color
#3F83F7 is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.187 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.033 away. Black text reads best on it, at 5.80:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.187) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.80:1 |
| White text | 3.62:1 |
Values
| HEX | #3F83F7 |
| RGB | rgb(63, 131, 247) |
| HSL | hsl(218, 92%, 61%) |
| OKLCH | oklch(62.7% 0.187 260.4) |
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 #3F83F7 | 3.62:1 | AA large text | Lc -68.8 | Content text, not long reading |
| Black text on #3F83F7 | 5.80:1 | AA | Lc 40.7 | Non-text elements, placeholder text |
| #3F83F7 text on white | 3.62:1 | AA large text | Lc 63.3 | Content text, not long reading |
| #3F83F7 text on black | 5.80:1 | AA | Lc -38.3 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFC
oklch(93.7% 0.026 259)
-
Step 200
200
#C6DAFC
oklch(88.4% 0.052 261.1)
-
Step 300
300
#9FC2FC
oklch(81% 0.091 260.4)
-
Step 400
400
#69A0FB
oklch(70.8% 0.146 260)
-
Step 500
500 (this color)
#3F83F7
oklch(62.7% 0.187 260.4)
-
Step 600
600
#1F6AE7
oklch(55.5% 0.203 260.4)
-
Step 700
700
#1158C9
oklch(49.2% 0.188 260.3)
-
Step 800
800
#1248A3
oklch(42.7% 0.158 260.6)
-
Step 900
900
#163E81
oklch(37.7% 0.122 260.2)
-
Step 950
950
#0E254B
oklch(27% 0.076 259.9)
#3F83F7 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) | #438FFB | 0.032 |
| Deuteranopia (no green cones) | #057FF5 | 0.030 |
| Tritanopia (no blue cones) | #009FB1 | 0.147 |
| Achromatopsia (no color) | #868686 | 0.187 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F83F7
#3F83F7
oklch(62.7% 0.187 260.4)
- #B07E00
#B07E00
oklch(62.7% 0.13 80.6)
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 #3F83F7, closest first.
No curated palette has a color within ΔE 0.04 of #3F83F7.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.033
- Dodger Blue #1E90FF ΔE 0.034
- Soft Blue #6488EA ΔE 0.044
- Dark Sky Blue #448EE4 ΔE 0.044
- Cornflower #6A79F7 ΔE 0.046
- Chefchaouen Blue #4895EF ΔE 0.052
- Cornflower Blue #6495ED ΔE 0.066
- Cerulean Blue #056EEE ΔE 0.066
Use #3F83F7 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.