#528EAF
Closest named color: Dusty Blue (#5A86AD). oklch(61.9% 0.08 234.2), rgb(82, 142, 175).
Aa
Black text reads best on this color (5.84:1).
About this color
#528EAF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.080 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.023 away. Black text reads best on it, at 5.84:1.
| Hue family | Blues |
| Lightness | medium-dark (62%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.84:1 |
| White text | 3.59:1 |
Values
| HEX | #528EAF |
| RGB | rgb(82, 142, 175) |
| HSL | hsl(201, 37%, 50%) |
| OKLCH | oklch(61.9% 0.08 234.2) |
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 #528EAF | 3.59:1 | AA large text | Lc -68.9 | Content text, not long reading |
| Black text on #528EAF | 5.84:1 | AA | Lc 40.7 | Non-text elements, placeholder text |
| #528EAF text on white | 3.59:1 | AA large text | Lc 63.4 | Content text, not long reading |
| #528EAF text on black | 5.84:1 | AA | Lc -38.3 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CCDCE6
oklch(88.5% 0.022 235)
-
Step 300
300
#A9C5D6
oklch(80.8% 0.039 234.6)
-
Step 400
400
#7AA8C2
oklch(70.8% 0.062 233.6)
-
Step 500
500 (this color)
#528EAF
oklch(61.9% 0.08 234.2)
-
Step 600
600
#387B9F
oklch(55.5% 0.088 234.9)
-
Step 700
700
#2A6888
oklch(49.2% 0.081 234.4)
-
Step 800
800
#24556E
oklch(42.7% 0.067 233.6)
-
Step 900
900
#234659
oklch(37.7% 0.052 234.2)
-
Step 950
950
#152934
oklch(26.9% 0.033 233.9)
#528EAF 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) | #7E8DB1 | 0.051 |
| Deuteranopia (no green cones) | #7183AE | 0.044 |
| Tritanopia (no blue cones) | #179799 | 0.062 |
| Achromatopsia (no color) | #878787 | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #528EAF
#528EAF
oklch(61.9% 0.08 234.2)
- #AC7957
#AC7957
oklch(62% 0.08 54.4)
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 #528EAF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.023
- Off Blue #5684AE ΔE 0.028
- Faded Blue #658CBB ΔE 0.030
- Cool Blue #4984B8 ΔE 0.037
- Steel Blue #4682B4 ΔE 0.041
- Blue Grey #758DA3 ΔE 0.041
- Silver Lake Blue #778DA9 ΔE 0.042
- Blue NCS #118AB2 ΔE 0.043
Use #528EAF 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.