#3278EF
Closest named color: Clear Blue (#247AFD). oklch(59.5% 0.193 260.4), rgb(50, 120, 239).
Aa
Black text reads best on this color (5.06:1).
About this color
#3278EF is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.193 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.022 away. Black text reads best on it, at 5.06:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.193) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.06:1 |
| White text | 4.14:1 |
Values
| HEX | #3278EF |
| RGB | rgb(50, 120, 239) |
| HSL | hsl(218, 86%, 57%) |
| OKLCH | oklch(59.5% 0.193 260.4) |
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 #3278EF | 4.14:1 | AA large text | Lc -73.5 | Content text, not long reading |
| Black text on #3278EF | 5.06:1 | AA | Lc 36.1 | Non-text elements, placeholder text |
| #3278EF text on white | 4.14:1 | AA large text | Lc 68.0 | Content text, not long reading |
| #3278EF text on black | 5.06:1 | AA | Lc -33.7 | 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
#E0EBFD
oklch(93.7% 0.027 260.3)
-
Step 200
200
#C6DAFD
oklch(88.5% 0.053 261.7)
-
Step 300
300
#9EC2FE
oklch(81% 0.094 260.4)
-
Step 400
400
#689FFE
oklch(70.7% 0.151 260.7)
-
Step 500
500 (this color)
#3278EF
oklch(59.5% 0.193 260.4)
-
Step 600
600
#1A69EB
oklch(55.6% 0.21 260.5)
-
Step 700
700
#0B57CC
oklch(49.1% 0.194 260.3)
-
Step 800
800
#0E48A5
oklch(42.7% 0.161 260.2)
-
Step 900
900
#143D83
oklch(37.6% 0.127 260.5)
-
Step 950
950
#0D254D
oklch(27.1% 0.08 260.1)
#3278EF 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) | #2D86F3 | 0.035 |
| Deuteranopia (no green cones) | #0074ED | 0.024 |
| Tritanopia (no blue cones) | #0095A8 | 0.150 |
| Achromatopsia (no color) | #7D7D7D | 0.193 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3278EF
#3278EF
oklch(59.5% 0.193 260.4)
- #A47500
#A47500
oklch(59.4% 0.123 80.5)
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 #3278EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.022
- Cerulean Blue #056EEE ΔE 0.035
- Royal Blue #4169E1 ΔE 0.040
- Neon Blue #4361EE ΔE 0.054
- Bright Blue #0165FC ΔE 0.058
- Cornflower #6A79F7 ΔE 0.058
- Dodger Blue #1E90FF ΔE 0.062
- Dark Sky Blue #448EE4 ΔE 0.066
Use #3278EF 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.