#3984ED
Closest named color: Dark Sky Blue (#448EE4). oklch(62.1% 0.175 257.6), rgb(57, 132, 237).
Aa
Black text reads best on this color (5.69:1).
About this color
#3984ED is a medium-light, vivid blue. In OKLCH its lightness is 62%, its chroma 0.175 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.034 away. Black text reads best on it, at 5.69:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | vivid (0.175) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.69:1 |
| White text | 3.68:1 |
Values
| HEX | #3984ED |
| RGB | rgb(57, 132, 237) |
| HSL | hsl(215, 83%, 58%) |
| OKLCH | oklch(62.1% 0.175 257.6) |
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 #3984ED | 3.68:1 | AA large text | Lc -69.5 | Content text, not long reading |
| Black text on #3984ED | 5.69:1 | AA | Lc 40.1 | Non-text elements, placeholder text |
| #3984ED text on white | 3.68:1 | AA large text | Lc 64.0 | Content text, not long reading |
| #3984ED text on black | 5.69:1 | AA | Lc -37.7 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFB
oklch(93.7% 0.025 257.6)
-
Step 200
200
#C6DBF9
oklch(88.5% 0.047 257.3)
-
Step 300
300
#9EC3F8
oklch(80.9% 0.085 257.3)
-
Step 400
400
#68A1F5
oklch(70.6% 0.138 258)
-
Step 500
500 (this color)
#3984ED
oklch(62.1% 0.175 257.6)
-
Step 600
600
#156EDF
oklch(55.6% 0.19 257.6)
-
Step 700
700
#035BC2
oklch(49.1% 0.177 257.7)
-
Step 800
800
#0B4B9D
oklch(42.7% 0.147 257.8)
-
Step 900
900
#13407D
oklch(37.8% 0.114 257.4)
-
Step 950
950
#0D2649
oklch(27.1% 0.072 257.4)
#3984ED 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) | #4E8EF1 | 0.034 |
| Deuteranopia (no green cones) | #277DEB | 0.023 |
| Tritanopia (no blue cones) | #009DAD | 0.135 |
| Achromatopsia (no color) | #858585 | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3984ED
#3984ED
oklch(62.1% 0.175 257.6)
- #B17A00
#B17A00
oklch(62% 0.13 77.2)
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 #3984ED, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.034
- Dodger Blue #1E90FF ΔE 0.038
- Clear Blue #247AFD ΔE 0.040
- Soft Blue #6488EA ΔE 0.043
- Chefchaouen Blue #4895EF ΔE 0.049
- Cornflower #6A79F7 ΔE 0.055
- Water Blue #0E87CC ΔE 0.057
- Cornflower Blue #6495ED ΔE 0.064
Use #3984ED 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.