#347CDF
Closest named color: Clear Blue (#247AFD). oklch(59.3% 0.167 257.3), rgb(52, 124, 223).
Aa
Black text reads best on this color (5.09:1).
About this color
#347CDF is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.167 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.047 away. Black text reads best on it, at 5.09:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.09:1 |
| White text | 4.12:1 |
Values
| HEX | #347CDF |
| RGB | rgb(52, 124, 223) |
| HSL | hsl(215, 73%, 54%) |
| OKLCH | oklch(59.3% 0.167 257.3) |
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 #347CDF | 4.12:1 | AA large text | Lc -73.4 | Content text, not long reading |
| Black text on #347CDF | 5.09:1 | AA | Lc 36.2 | Non-text elements, placeholder text |
| #347CDF text on white | 4.12:1 | AA large text | Lc 67.9 | Content text, not long reading |
| #347CDF text on black | 5.09:1 | AA | Lc -33.8 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF9
oklch(93.7% 0.022 256.7)
-
Step 200
200
#C8DBF5
oklch(88.5% 0.041 256.2)
-
Step 300
300
#A2C3F1
oklch(80.9% 0.075 256.7)
-
Step 400
400
#6FA2EB
oklch(70.7% 0.121 257.4)
-
Step 500
500
#4889E4
oklch(63.1% 0.153 257.3)
-
Step 600
600 (this color)
#347CDF
oklch(59.3% 0.167 257.3)
-
Step 700
700
#1A5EB6
oklch(49.2% 0.154 257.1)
-
Step 800
800
#194D94
oklch(42.8% 0.129 257.5)
-
Step 900
900
#1B4176
oklch(37.8% 0.1 257.4)
-
Step 950
950
#112645
oklch(27% 0.064 258.1)
#347CDF 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) | #4985E3 | 0.032 |
| Deuteranopia (no green cones) | #2476DD | 0.020 |
| Tritanopia (no blue cones) | #0093A2 | 0.129 |
| Achromatopsia (no color) | #7D7D7D | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #347CDF
#347CDF
oklch(59.3% 0.167 257.3)
- #A67300
#A67300
oklch(59.3% 0.124 77.8)
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 #347CDF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.047
- Water Blue #0E87CC ΔE 0.047
- Royal Blue #4169E1 ΔE 0.048
- Windows Blue #3778BF ΔE 0.049
- Cerulean Blue #056EEE ΔE 0.051
- Dark Sky Blue #448EE4 ΔE 0.052
- Soft Blue #6488EA ΔE 0.061
- Dodger Blue #1E90FF ΔE 0.065
Use #347CDF 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.