#3683FB
Closest named color: Clear Blue (#247AFD). oklch(62.7% 0.195 259.3), rgb(54, 131, 251).
Aa
Black text reads best on this color (5.79:1).
About this color
#3683FB is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.195 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.027 away. Black text reads best on it, at 5.79:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.195) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.79:1 |
| White text | 3.62:1 |
Values
| HEX | #3683FB |
| RGB | rgb(54, 131, 251) |
| HSL | hsl(217, 96%, 60%) |
| OKLCH | oklch(62.7% 0.195 259.3) |
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 #3683FB | 3.62:1 | AA large text | Lc -68.8 | Content text, not long reading |
| Black text on #3683FB | 5.79:1 | AA | Lc 40.8 | Non-text elements, placeholder text |
| #3683FB text on white | 3.62:1 | AA large text | Lc 63.3 | Content text, not long reading |
| #3683FB text on black | 5.79:1 | AA | Lc -38.4 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFD
oklch(93.6% 0.028 258.4)
-
Step 200
200
#C5DBFD
oklch(88.6% 0.053 259)
-
Step 300
300
#9CC2FE
oklch(80.9% 0.095 259.4)
-
Step 400
400
#64A0FE
oklch(70.7% 0.152 259.1)
-
Step 500
500 (this color)
#3683FB
oklch(62.7% 0.195 259.3)
-
Step 600
600
#0B6AEC
oklch(55.6% 0.212 259.3)
-
Step 700
700
#0058CB
oklch(49.1% 0.193 259.2)
-
Step 800
800
#0548A6
oklch(42.7% 0.163 259.4)
-
Step 900
900
#103E83
oklch(37.7% 0.126 259.1)
-
Step 950
950
#0B254D
oklch(27% 0.081 259)
#3683FB 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) | #3D90FF | 0.035 |
| Deuteranopia (no green cones) | #007EF9 | 0.026 |
| Tritanopia (no blue cones) | #00A0B3 | 0.150 |
| Achromatopsia (no color) | #868686 | 0.195 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3683FB
#3683FB
oklch(62.7% 0.195 259.3)
- #B27D00
#B27D00
oklch(62.7% 0.13 78.9)
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 #3683FB, closest first.
No curated palette has a color within ΔE 0.04 of #3683FB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.027
- Dodger Blue #1E90FF ΔE 0.033
- Dark Sky Blue #448EE4 ΔE 0.050
- Cornflower #6A79F7 ΔE 0.051
- Soft Blue #6488EA ΔE 0.052
- Chefchaouen Blue #4895EF ΔE 0.057
- Cerulean Blue #056EEE ΔE 0.064
- Royal Blue #4169E1 ΔE 0.072
Use #3683FB 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.