#528CEE
Closest named color: Soft Blue (#6488EA). oklch(64.8% 0.159 260.2), rgb(82, 140, 238).
Aa
Black text reads best on this color (6.34:1).
About this color
#528CEE is a medium-light, vivid blue. In OKLCH its lightness is 65%, its chroma 0.159 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.020 away. Black text reads best on it, at 6.34:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.159) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.34:1 |
| White text | 3.30:1 |
Values
| HEX | #528CEE |
| RGB | rgb(82, 140, 238) |
| HSL | hsl(218, 82%, 63%) |
| OKLCH | oklch(64.8% 0.159 260.2) |
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 #528CEE | 3.30:1 | AA large text | Lc -65.6 | Content text, not long reading |
| Black text on #528CEE | 6.34:1 | AA | Lc 43.9 | Non-text elements, placeholder text |
| #528CEE text on white | 3.30:1 | AA large text | Lc 60.2 | Content text, not long reading |
| #528CEE text on black | 6.34:1 | AA | Lc -41.5 | 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
#E1EAF9
oklch(93.5% 0.023 260.7)
-
Step 200
200
#C9DAF6
oklch(88.4% 0.043 260.4)
-
Step 300
300
#A4C2F4
oklch(81% 0.078 260.5)
-
Step 400
400
#72A1EE
oklch(70.8% 0.124 259.9)
-
Step 500
500 (this color)
#528CEE
oklch(64.8% 0.159 260.2)
-
Step 600
600
#306ED6
oklch(55.5% 0.172 260.2)
-
Step 700
700
#235BBA
oklch(49% 0.161 260.4)
-
Step 800
800
#1F4B96
oklch(42.6% 0.133 260.4)
-
Step 900
900
#1E4078
oklch(37.8% 0.104 259.9)
-
Step 950
950
#122646
oklch(27.1% 0.065 259.4)
#528CEE 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) | #5F95F2 | 0.029 |
| Deuteranopia (no green cones) | #4687EC | 0.018 |
| Tritanopia (no blue cones) | #00A2B1 | 0.130 |
| Achromatopsia (no color) | #8D8D8D | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #528CEE
#528CEE
oklch(64.8% 0.159 260.2)
- #B88400
#B88400
oklch(64.8% 0.134 80.7)
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 #528CEE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.020
- Dark Sky Blue #448EE4 ΔE 0.021
- Chefchaouen Blue #4895EF ΔE 0.024
- Cornflower Blue #6495ED ΔE 0.032
- Dodger Blue #1E90FF ΔE 0.038
- Cornflower #6A79F7 ΔE 0.055
- Clear Blue #247AFD ΔE 0.067
- Water Blue #0E87CC ΔE 0.069
Use #528CEE 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.