#528CD2
Closest named color: Dark Sky Blue (#448EE4). oklch(63.2% 0.123 254.2), rgb(82, 140, 210).
Aa
Black text reads best on this color (6.04:1).
About this color
#528CD2 is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.123 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.028 away. Black text reads best on it, at 6.04:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.04:1 |
| White text | 3.47:1 |
Values
| HEX | #528CD2 |
| RGB | rgb(82, 140, 210) |
| HSL | hsl(213, 59%, 57%) |
| OKLCH | oklch(63.2% 0.123 254.2) |
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 #528CD2 | 3.47:1 | AA large text | Lc -67.6 | Content text, not long reading |
| Black text on #528CD2 | 6.04:1 | AA | Lc 42.0 | Non-text elements, placeholder text |
| #528CD2 text on white | 3.47:1 | AA large text | Lc 62.1 | Content text, not long reading |
| #528CD2 text on black | 6.04:1 | AA | Lc -39.6 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF6
oklch(93.7% 0.018 253.3)
-
Step 200
200
#CBDBEF
oklch(88.6% 0.033 254)
-
Step 300
300
#A7C3E7
oklch(80.9% 0.06 254.8)
-
Step 400
400
#76A4DB
oklch(70.7% 0.095 253.4)
-
Step 500
500 (this color)
#528CD2
oklch(63.2% 0.123 254.2)
-
Step 600
600
#3574BF
oklch(55.5% 0.134 254.5)
-
Step 700
700
#2761A5
oklch(49% 0.125 254.5)
-
Step 800
800
#225085
oklch(42.7% 0.102 253.9)
-
Step 900
900
#21436B
oklch(37.8% 0.08 253.9)
-
Step 950
950
#14273F
oklch(27% 0.052 255)
#528CD2 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) | #6E90D5 | 0.034 |
| Deuteranopia (no green cones) | #5D84D1 | 0.023 |
| Tritanopia (no blue cones) | #009CA5 | 0.102 |
| Achromatopsia (no color) | #898989 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #528CD2
#528CD2
oklch(63.2% 0.123 254.2)
- #B57D21
#B57D21
oklch(63.2% 0.123 74.3)
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 #528CD2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.028
- Faded Blue #658CBB ΔE 0.039
- Cool Blue #4984B8 ΔE 0.044
- Soft Blue #6488EA ΔE 0.045
- Chefchaouen Blue #4895EF ΔE 0.045
- Water Blue #0E87CC ΔE 0.046
- Cornflower Blue #6495ED ΔE 0.050
- Steel Blue #4682B4 ΔE 0.052
Use #528CD2 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.