#4084EE
Closest named color: Dark Sky Blue (#448EE4). oklch(62.4% 0.174 259.1), rgb(64, 132, 238).
Aa
Black text reads best on this color (5.75:1).
About this color
#4084EE is a medium-light, vivid blue. In OKLCH its lightness is 62%, its chroma 0.174 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.033 away. Black text reads best on it, at 5.75:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | vivid (0.174) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.75:1 |
| White text | 3.65:1 |
Values
| HEX | #4084EE |
| RGB | rgb(64, 132, 238) |
| HSL | hsl(217, 84%, 59%) |
| OKLCH | oklch(62.4% 0.174 259.1) |
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 #4084EE | 3.65:1 | AA large text | Lc -69.2 | Content text, not long reading |
| Black text on #4084EE | 5.75:1 | AA | Lc 40.4 | Non-text elements, placeholder text |
| #4084EE text on white | 3.65:1 | AA large text | Lc 63.7 | Content text, not long reading |
| #4084EE text on black | 5.75:1 | AA | Lc -38.0 | 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
#C7DBF9
oklch(88.6% 0.047 258.4)
-
Step 300
300
#A0C2F8
oklch(80.9% 0.085 259.5)
-
Step 400
400
#6BA1F5
oklch(70.8% 0.136 258.9)
-
Step 500
500 (this color)
#4084EE
oklch(62.4% 0.174 259.1)
-
Step 600
600
#216DDF
oklch(55.6% 0.189 259.1)
-
Step 700
700
#135AC2
oklch(49.1% 0.176 259.2)
-
Step 800
800
#134A9D
oklch(42.6% 0.147 259.3)
-
Step 900
900
#173F7C
oklch(37.6% 0.113 258.9)
-
Step 950
950
#0F2549
oklch(26.9% 0.073 259.8)
#4084EE 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) | #4E8EF2 | 0.031 |
| Deuteranopia (no green cones) | #297EEC | 0.024 |
| Tritanopia (no blue cones) | #009DAD | 0.137 |
| Achromatopsia (no color) | #868686 | 0.174 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4084EE
#4084EE
oklch(62.4% 0.174 259.1)
- #B07C00
#B07C00
oklch(62.3% 0.129 79.2)
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 #4084EE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.033
- Dodger Blue #1E90FF ΔE 0.038
- Soft Blue #6488EA ΔE 0.038
- Clear Blue #247AFD ΔE 0.042
- Chefchaouen Blue #4895EF ΔE 0.047
- Cornflower #6A79F7 ΔE 0.050
- Cornflower Blue #6495ED ΔE 0.061
- Water Blue #0E87CC ΔE 0.061
Use #4084EE 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.