#428DF5
Closest named color: Dodger Blue (#1E90FF). oklch(64.8% 0.172 257.3), rgb(66, 141, 245).
Aa
Black text reads best on this color (6.36:1).
About this color
#428DF5 is a medium-light, vivid blue. In OKLCH its lightness is 65%, its chroma 0.172 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Dodger Blue (#1E90FF), ΔE 0.022 away. Black text reads best on it, at 6.36:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.172) |
| Temperature | cool |
| Nearest name | Dodger Blue (#1E90FF) |
| Black text | 6.36:1 |
| White text | 3.30:1 |
Values
| HEX | #428DF5 |
| RGB | rgb(66, 141, 245) |
| HSL | hsl(215, 90%, 61%) |
| OKLCH | oklch(64.8% 0.172 257.3) |
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 #428DF5 | 3.30:1 | AA large text | Lc -65.4 | Content text, not long reading |
| Black text on #428DF5 | 6.36:1 | AA | Lc 44.1 | Non-text elements, placeholder text |
| #428DF5 text on white | 3.30:1 | AA large text | Lc 60.0 | Large or bold text, headings |
| #428DF5 text on black | 6.36:1 | AA | Lc -41.7 | 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
#9EC3F7
oklch(80.9% 0.084 256.9)
-
Step 400
400
#68A2F3
oklch(70.7% 0.134 256.9)
-
Step 500
500 (this color)
#428DF5
oklch(64.8% 0.172 257.3)
-
Step 600
600
#156FDE
oklch(55.7% 0.187 257.2)
-
Step 700
700
#035CC0
oklch(49.1% 0.173 257.1)
-
Step 800
800
#0B4C9C
oklch(42.8% 0.144 257.2)
-
Step 900
900
#14407C
oklch(37.8% 0.113 257.5)
-
Step 950
950
#0D2648
oklch(27% 0.07 257)
#428DF5 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) | #5A96F9 | 0.034 |
| Deuteranopia (no green cones) | #3986F3 | 0.021 |
| Tritanopia (no blue cones) | #00A5B5 | 0.133 |
| Achromatopsia (no color) | #8D8D8D | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428DF5
#428DF5
oklch(64.8% 0.172 257.3)
- #BC8200
#BC8200
oklch(64.9% 0.136 77.3)
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 #428DF5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dodger Blue #1E90FF ΔE 0.022
- Chefchaouen Blue #4895EF ΔE 0.026
- Dark Sky Blue #448EE4 ΔE 0.026
- Soft Blue #6488EA ΔE 0.034
- Cornflower Blue #6495ED ΔE 0.042
- Clear Blue #247AFD ΔE 0.058
- Cornflower #6A79F7 ΔE 0.059
- Water Blue #0E87CC ΔE 0.071
Use #428DF5 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.