#3F80ED
Closest named color: Clear Blue (#247AFD). oklch(61.4% 0.178 260.1), rgb(63, 128, 237).
Aa
Black text reads best on this color (5.52:1).
About this color
#3F80ED is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.178 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.035 away. Black text reads best on it, at 5.52:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.178) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.52:1 |
| White text | 3.80:1 |
Values
| HEX | #3F80ED |
| RGB | rgb(63, 128, 237) |
| HSL | hsl(218, 83%, 59%) |
| OKLCH | oklch(61.4% 0.178 260.1) |
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 #3F80ED | 3.80:1 | AA large text | Lc -70.6 | Content text, not long reading |
| Black text on #3F80ED | 5.52:1 | AA | Lc 38.9 | Non-text elements, placeholder text |
| #3F80ED text on white | 3.80:1 | AA large text | Lc 65.1 | Content text, not long reading |
| #3F80ED text on black | 5.52:1 | AA | Lc -36.5 | 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
#E0EBFB
oklch(93.7% 0.025 257.6)
-
Step 200
200
#C7DAFA
oklch(88.4% 0.049 260.9)
-
Step 300
300
#A0C2F9
oklch(80.9% 0.087 259.9)
-
Step 400
400
#6CA0F6
oklch(70.7% 0.138 260)
-
Step 500
500 (this color)
#3F80ED
oklch(61.4% 0.178 260.1)
-
Step 600
600
#246CE2
oklch(55.7% 0.193 260.1)
-
Step 700
700
#1759C4
oklch(49.1% 0.18 260.2)
-
Step 800
800
#164A9E
oklch(42.8% 0.147 259.9)
-
Step 900
900
#193F7E
oklch(37.8% 0.115 260)
-
Step 950
950
#0F254A
oklch(27% 0.074 260.2)
#3F80ED 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) | #468BF1 | 0.030 |
| Deuteranopia (no green cones) | #1B7BEB | 0.027 |
| Tritanopia (no blue cones) | #009AAB | 0.140 |
| Achromatopsia (no color) | #838383 | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F80ED
#3F80ED
oklch(61.4% 0.178 260.1)
- #AC7A00
#AC7A00
oklch(61.4% 0.127 79.9)
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 #3F80ED, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.035
- Dark Sky Blue #448EE4 ΔE 0.042
- Soft Blue #6488EA ΔE 0.045
- Dodger Blue #1E90FF ΔE 0.046
- Cornflower #6A79F7 ΔE 0.049
- Chefchaouen Blue #4895EF ΔE 0.057
- Royal Blue #4169E1 ΔE 0.059
- Cerulean Blue #056EEE ΔE 0.059
Use #3F80ED 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.