#428FF2
Closest named color: Chefchaouen Blue (#4895EF). oklch(65% 0.166 256), rgb(66, 143, 242).
Aa
Black text reads best on this color (6.44:1).
About this color
#428FF2 is a medium-light, vivid blue. In OKLCH its lightness is 65%, its chroma 0.166 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.019 away. Black text reads best on it, at 6.44:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.166) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 6.44:1 |
| White text | 3.25:1 |
Values
| HEX | #428FF2 |
| RGB | rgb(66, 143, 242) |
| HSL | hsl(214, 87%, 60%) |
| OKLCH | oklch(65% 0.166 256) |
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 #428FF2 | 3.25:1 | AA large text | Lc -65.0 | Content text, not long reading |
| Black text on #428FF2 | 6.44:1 | AA | Lc 44.5 | Non-text elements, placeholder text |
| #428FF2 text on white | 3.25:1 | AA large text | Lc 59.5 | Large or bold text, headings |
| #428FF2 text on black | 6.44:1 | AA | Lc -42.2 | 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
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C6DBF7
oklch(88.5% 0.045 255.6)
-
Step 300
300
#9EC3F5
oklch(80.8% 0.082 256.1)
-
Step 400
400
#68A2F0
oklch(70.6% 0.13 256.2)
-
Step 500
500 (this color)
#428FF2
oklch(65% 0.166 256)
-
Step 600
600
#1270DA
oklch(55.6% 0.181 256.1)
-
Step 700
700
#005DBD
oklch(49.1% 0.169 256.1)
-
Step 800
800
#084D99
oklch(42.8% 0.139 255.9)
-
Step 900
900
#13417A
oklch(37.8% 0.109 256)
-
Step 950
950
#0D2647
oklch(26.9% 0.069 256.4)
#428FF2 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) | #5F97F6 | 0.036 |
| Deuteranopia (no green cones) | #4287F0 | 0.021 |
| Tritanopia (no blue cones) | #00A6B5 | 0.128 |
| Achromatopsia (no color) | #8E8E8E | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428FF2
#428FF2
oklch(65% 0.166 256)
- #BE8200
#BE8200
oklch(65.1% 0.137 76.3)
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 #428FF2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.019
- Dark Sky Blue #448EE4 ΔE 0.021
- Dodger Blue #1E90FF ΔE 0.025
- Soft Blue #6488EA ΔE 0.034
- Cornflower Blue #6495ED ΔE 0.038
- Cornflower #6A79F7 ΔE 0.064
- Clear Blue #247AFD ΔE 0.064
- Water Blue #0E87CC ΔE 0.068
Use #428FF2 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.