#3F6EFA
Closest named color: Clear Blue (#247AFD). oklch(58.8% 0.215 265.9), rgb(63, 110, 250).
Aa
Black text reads best on this color (4.82:1).
About this color
#3F6EFA is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.215 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.030 away. Black text reads best on it, at 4.82:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.215) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 4.82:1 |
| White text | 4.35:1 |
Values
| HEX | #3F6EFA |
| RGB | rgb(63, 110, 250) |
| HSL | hsl(225, 95%, 61%) |
| OKLCH | oklch(58.8% 0.215 265.9) |
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 #3F6EFA | 4.35:1 | AA large text | Lc -75.1 | Fine for body text |
| Black text on #3F6EFA | 4.82:1 | AA | Lc 34.5 | Non-text elements, placeholder text |
| #3F6EFA text on white | 4.35:1 | AA large text | Lc 69.6 | Content text, not long reading |
| #3F6EFA text on black | 4.82:1 | AA | Lc -32.1 | 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 600.
-
Step 50
50
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFD
oklch(93.6% 0.028 265.4)
-
Step 200
200
#C8D9FE
oklch(88.5% 0.054 265.8)
-
Step 300
300
#A4C0FF
oklch(81% 0.095 265.8)
-
Step 400
400
#739CFF
oklch(70.7% 0.152 265.7)
-
Step 500
500
#507FFF
oklch(63.1% 0.197 265.8)
-
Step 600
600 (this color)
#3F6EFA
oklch(58.8% 0.215 265.9)
-
Step 700
700
#2A51D0
oklch(49.1% 0.201 265.9)
-
Step 800
800
#2344A8
oklch(42.8% 0.165 265.7)
-
Step 900
900
#203A85
oklch(37.6% 0.13 265.9)
-
Step 950
950
#13234E
oklch(27% 0.082 265.8)
#3F6EFA 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) | #0082FF | 0.050 |
| Deuteranopia (no green cones) | #0071F7 | 0.030 |
| Tritanopia (no blue cones) | #0091A9 | 0.171 |
| Achromatopsia (no color) | #797979 | 0.216 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F6EFA
#3F6EFA
oklch(58.8% 0.215 265.9)
- #9C7600
#9C7600
oklch(58.7% 0.12 86)
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 #3F6EFA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.030
- Neon Blue #4361EE ΔE 0.034
- Cerulean Blue #056EEE ΔE 0.036
- Royal Blue #4169E1 ΔE 0.039
- Bright Blue #0165FC ΔE 0.042
- Azul #1D5DEC ΔE 0.056
- Cornflower #6A79F7 ΔE 0.058
- Warm Blue #4B57DB ΔE 0.069
Use #3F6EFA 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.