#3879FC
Closest named color: Clear Blue (#247AFD). oklch(60.8% 0.207 262.3), rgb(56, 121, 252).
Aa
Black text reads best on this color (5.30:1).
About this color
#3879FC is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.207 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.012 away. Black text reads best on it, at 5.30:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.207) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.30:1 |
| White text | 3.95:1 |
Values
| HEX | #3879FC |
| RGB | rgb(56, 121, 252) |
| HSL | hsl(220, 97%, 60%) |
| OKLCH | oklch(60.8% 0.207 262.3) |
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 #3879FC | 3.95:1 | AA large text | Lc -71.9 | Content text, not long reading |
| Black text on #3879FC | 5.30:1 | AA | Lc 37.7 | Non-text elements, placeholder text |
| #3879FC text on white | 3.95:1 | AA large text | Lc 66.4 | Content text, not long reading |
| #3879FC text on black | 5.30:1 | AA | Lc -35.3 | 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
#DFEAFE
oklch(93.5% 0.03 262.5)
-
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)
#3879FC
oklch(60.8% 0.207 262.3)
-
Step 600
600
#1F65F4
oklch(55.6% 0.225 262.3)
-
Step 700
700
#1253D4
oklch(49.2% 0.208 262.2)
-
Step 800
800
#1245AC
oklch(42.8% 0.173 262.2)
-
Step 900
900
#163B88
oklch(37.6% 0.136 262.5)
-
Step 950
950
#0E244F
oklch(27.1% 0.084 262)
#3879FC 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) | #1689FF | 0.039 |
| Deuteranopia (no green cones) | #0077F9 | 0.025 |
| Tritanopia (no blue cones) | #0099AF | 0.161 |
| Achromatopsia (no color) | #808080 | 0.207 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3879FC
#3879FC
oklch(60.8% 0.207 262.3)
- #A77A00
#A77A00
oklch(60.8% 0.125 82.6)
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 #3879FC, closest first.
No curated palette has a color within ΔE 0.04 of #3879FC.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.012
- Cerulean Blue #056EEE ΔE 0.045
- Cornflower #6A79F7 ΔE 0.051
- Royal Blue #4169E1 ΔE 0.054
- Dodger Blue #1E90FF ΔE 0.057
- Neon Blue #4361EE ΔE 0.058
- Bright Blue #0165FC ΔE 0.058
- Soft Blue #6488EA ΔE 0.068
Use #3879FC 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.