#3679F3
Closest named color: Clear Blue (#247AFD). oklch(60.1% 0.196 261.2), rgb(54, 121, 243).
Aa
Black text reads best on this color (5.18:1).
About this color
#3679F3 is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.196 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.017 away. Black text reads best on it, at 5.18:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.196) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.18:1 |
| White text | 4.04:1 |
Values
| HEX | #3679F3 |
| RGB | rgb(54, 121, 243) |
| HSL | hsl(219, 89%, 58%) |
| OKLCH | oklch(60.1% 0.196 261.2) |
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 #3679F3 | 4.04:1 | AA large text | Lc -72.7 | Content text, not long reading |
| Black text on #3679F3 | 5.18:1 | AA | Lc 36.9 | Non-text elements, placeholder text |
| #3679F3 text on white | 4.04:1 | AA large text | Lc 67.2 | Content text, not long reading |
| #3679F3 text on black | 5.18:1 | AA | Lc -34.5 | 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
#E0EBFD
oklch(93.7% 0.027 260.3)
-
Step 200
200
#C6DAFD
oklch(88.5% 0.053 261.7)
-
Step 300
300
#9EC1FF
oklch(80.8% 0.096 261.6)
-
Step 400
400
#699FFF
oklch(70.8% 0.152 261.1)
-
Step 500
500 (this color)
#3679F3
oklch(60.1% 0.196 261.2)
-
Step 600
600
#1E68ED
oklch(55.6% 0.213 261.2)
-
Step 700
700
#1055CE
oklch(49% 0.198 261.2)
-
Step 800
800
#1147A7
oklch(42.8% 0.164 261.1)
-
Step 900
900
#163D84
oklch(37.8% 0.128 261.2)
-
Step 950
950
#0E244D
oklch(26.9% 0.081 261.5)
#3679F3 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) | #2A87F7 | 0.035 |
| Deuteranopia (no green cones) | #0076F1 | 0.025 |
| Tritanopia (no blue cones) | #0097AB | 0.152 |
| Achromatopsia (no color) | #7E7E7E | 0.196 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3679F3
#3679F3
oklch(60.1% 0.196 261.2)
- #A67700
#A67700
oklch(60.1% 0.124 80.9)
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 #3679F3, closest first.
No curated palette has a color within ΔE 0.04 of #3679F3.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.017
- Cerulean Blue #056EEE ΔE 0.039
- Royal Blue #4169E1 ΔE 0.045
- Cornflower #6A79F7 ΔE 0.053
- Neon Blue #4361EE ΔE 0.056
- Dodger Blue #1E90FF ΔE 0.058
- Bright Blue #0165FC ΔE 0.060
- Dark Sky Blue #448EE4 ΔE 0.065
Use #3679F3 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.