#3478FF
Closest named color: Clear Blue (#247AFD). oklch(60.7% 0.213 262.1), rgb(52, 120, 255).
Aa
Black text reads best on this color (5.27:1).
About this color
#3478FF is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.213 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.010 away. Black text reads best on it, at 5.27:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.213) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.27:1 |
| White text | 3.97:1 |
Values
| HEX | #3478FF |
| RGB | rgb(52, 120, 255) |
| HSL | hsl(220, 100%, 60%) |
| OKLCH | oklch(60.7% 0.213 262.1) |
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 #3478FF | 3.97:1 | AA large text | Lc -72.0 | Content text, not long reading |
| Black text on #3478FF | 5.27:1 | AA | Lc 37.5 | Non-text elements, placeholder text |
| #3478FF text on white | 3.97:1 | AA large text | Lc 66.5 | Content text, not long reading |
| #3478FF text on black | 5.27:1 | AA | Lc -35.1 | 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 500.
-
Step 50
50
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DFEAFF
oklch(93.5% 0.031 263.5)
-
Step 200
200
#C5DAFF
oklch(88.5% 0.056 261.8)
-
Step 300
300
#9FC1FF
oklch(80.9% 0.096 262.2)
-
Step 400
400
#6B9EFF
oklch(70.7% 0.153 262.2)
-
Step 500
500 (this color)
#3478FF
oklch(60.7% 0.213 262.1)
-
Step 600
600
#1964F7
oklch(55.6% 0.231 262)
-
Step 700
700
#0C51D8
oklch(49% 0.216 262.2)
-
Step 800
800
#0E44AE
oklch(42.7% 0.178 262.1)
-
Step 900
900
#133B8A
oklch(37.7% 0.139 262)
-
Step 950
950
#0C2351
oklch(26.9% 0.089 262.2)
#3478FF 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) | #0089FF | 0.042 |
| Deuteranopia (no green cones) | #0077FC | 0.021 |
| Tritanopia (no blue cones) | #0099B0 | 0.164 |
| Achromatopsia (no color) | #7F7F7F | 0.213 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3478FF
#3478FF
oklch(60.7% 0.213 262.1)
- #A77900
#A77900
oklch(60.6% 0.125 81.9)
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 #3478FF, closest first.
No curated palette has a color within ΔE 0.04 of #3478FF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.010
- Cerulean Blue #056EEE ΔE 0.044
- Bright Blue #0165FC ΔE 0.055
- Cornflower #6A79F7 ΔE 0.055
- Royal Blue #4169E1 ΔE 0.055
- Neon Blue #4361EE ΔE 0.057
- Dodger Blue #1E90FF ΔE 0.059
- Soft Blue #6488EA ΔE 0.074
Use #3478FF 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.