#3F75FD
Closest named color: Clear Blue (#247AFD). oklch(60.3% 0.211 264.5), rgb(63, 117, 253).
Aa
Black text reads best on this color (5.17:1).
About this color
#3F75FD is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.211 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.019 away. Black text reads best on it, at 5.17:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.211) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.17:1 |
| White text | 4.05:1 |
Values
| HEX | #3F75FD |
| RGB | rgb(63, 117, 253) |
| HSL | hsl(223, 98%, 62%) |
| OKLCH | oklch(60.3% 0.211 264.5) |
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 #3F75FD | 4.05:1 | AA large text | Lc -72.8 | Content text, not long reading |
| Black text on #3F75FD | 5.17:1 | AA | Lc 36.8 | Non-text elements, placeholder text |
| #3F75FD text on white | 4.05:1 | AA large text | Lc 67.3 | Content text, not long reading |
| #3F75FD text on black | 5.17:1 | AA | Lc -34.4 | 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
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E0EAFF
oklch(93.6% 0.03 265.3)
-
Step 200
200
#C7D9FF
oklch(88.4% 0.056 265.2)
-
Step 300
300
#A2C0FF
oklch(80.9% 0.096 264.7)
-
Step 400
400
#709DFF
oklch(70.7% 0.152 264.2)
-
Step 500
500 (this color)
#3F75FD
oklch(60.3% 0.211 264.5)
-
Step 600
600
#2C62F7
oklch(55.6% 0.23 264.6)
-
Step 700
700
#2050D7
oklch(49.2% 0.213 264.5)
-
Step 800
800
#1B42AE
oklch(42.6% 0.178 264.6)
-
Step 900
900
#1B3A89
oklch(37.7% 0.137 264.5)
-
Step 950
950
#102350
oklch(27% 0.086 264.2)
#3F75FD 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) | #0087FF | 0.046 |
| Deuteranopia (no green cones) | #0076FA | 0.029 |
| Tritanopia (no blue cones) | #0096AE | 0.165 |
| Achromatopsia (no color) | #7E7E7E | 0.211 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F75FD
#3F75FD
oklch(60.3% 0.211 264.5)
- #A37A00
#A37A00
oklch(60.3% 0.124 84.9)
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 #3F75FD, closest first.
No curated palette has a color within ΔE 0.04 of #3F75FD.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.019
- Cerulean Blue #056EEE ΔE 0.044
- Cornflower #6A79F7 ΔE 0.049
- Royal Blue #4169E1 ΔE 0.050
- Neon Blue #4361EE ΔE 0.051
- Bright Blue #0165FC ΔE 0.054
- Dodger Blue #1E90FF ΔE 0.066
- Azul #1D5DEC ΔE 0.071
Use #3F75FD 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.