#528AB2
Closest named color: Dusty Blue (#5A86AD). oklch(61.1% 0.085 241.1), rgb(82, 138, 178).
Aa
Black text reads best on this color (5.63:1).
About this color
#528AB2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.085 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.013 away. Black text reads best on it, at 5.63:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.63:1 |
| White text | 3.72:1 |
Values
| HEX | #528AB2 |
| RGB | rgb(82, 138, 178) |
| HSL | hsl(205, 38%, 51%) |
| OKLCH | oklch(61.1% 0.085 241.1) |
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 #528AB2 | 3.72:1 | AA large text | Lc -70.2 | Content text, not long reading |
| Black text on #528AB2 | 5.63:1 | AA | Lc 39.4 | Non-text elements, placeholder text |
| #528AB2 text on white | 3.72:1 | AA large text | Lc 64.7 | Content text, not long reading |
| #528AB2 text on black | 5.63:1 | AA | Lc -37.0 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CCDBE7
oklch(88.4% 0.023 241.9)
-
Step 300
300
#AAC5D9
oklch(81% 0.041 240.1)
-
Step 400
400
#7BA6C7
oklch(70.6% 0.067 241.9)
-
Step 500
500 (this color)
#528AB2
oklch(61.1% 0.085 241.1)
-
Step 600
600
#3B7AA4
oklch(55.6% 0.092 240.4)
-
Step 700
700
#2D668D
oklch(49% 0.086 241.5)
-
Step 800
800
#275472
oklch(42.8% 0.07 240.4)
-
Step 900
900
#24455C
oklch(37.6% 0.055 240.8)
-
Step 950
950
#162936
oklch(27.1% 0.035 239.7)
#528AB2 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) | #788AB4 | 0.045 |
| Deuteranopia (no green cones) | #6B80B1 | 0.037 |
| Tritanopia (no blue cones) | #149497 | 0.070 |
| Achromatopsia (no color) | #848484 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #528AB2
#528AB2
oklch(61.1% 0.085 241.1)
- #A9774D
#A9774D
oklch(61.1% 0.085 60.3)
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 #528AB2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.013
- Off Blue #5684AE ΔE 0.017
- Cool Blue #4984B8 ΔE 0.024
- Faded Blue #658CBB ΔE 0.026
- Steel Blue #4682B4 ΔE 0.028
- Blue NCS #118AB2 ΔE 0.040
- Silver Lake Blue #778DA9 ΔE 0.046
- Blue Grey #758DA3 ΔE 0.047
Use #528AB2 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.