#00528F
Closest named color: Light Navy (#155084). oklch(43.1% 0.121 249.7), rgb(0, 82, 143).
Aa
White text reads best on this color (8.06:1).
About this color
#00528F is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.121 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.019 away. White text reads best on it, at 8.06:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.60:1 |
| White text | 8.06:1 |
Values
| HEX | #00528F |
| RGB | rgb(0, 82, 143) |
| HSL | hsl(206, 100%, 28%) |
| OKLCH | oklch(43.1% 0.121 249.7) |
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 #00528F | 8.06:1 | AAA | Lc -92.0 | Preferred for body text |
| Black text on #00528F | 2.60:1 | Fails | Lc 16.7 | Dividers and decoration only |
| #00528F text on white | 8.06:1 | AAA | Lc 87.3 | Fine for body text |
| #00528F text on black | 2.60:1 | Fails | Lc -14.8 | Not readable |
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 800.
-
Step 50
50
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF7
oklch(93.5% 0.02 250.4)
-
Step 200
200
#C6DCF3
oklch(88.5% 0.04 249.5)
-
Step 300
300
#9EC5ED
oklch(80.9% 0.071 249.4)
-
Step 400
400
#67A6E4
oklch(70.8% 0.112 249.3)
-
Step 500
500
#378EDD
oklch(63.2% 0.145 249.5)
-
Step 600
600
#0076CA
oklch(55.7% 0.156 249.7)
-
Step 700
700
#0063AB
oklch(49.2% 0.138 249.7)
-
Step 800
800 (this color)
#00528F
oklch(43.1% 0.121 249.7)
-
Step 900
900
#0F4471
oklch(37.8% 0.094 249.2)
-
Step 950
950
#0C2842
oklch(27.1% 0.059 249.5)
#00528F 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) | #335691 | 0.037 |
| Deuteranopia (no green cones) | #194B8E | 0.021 |
| Tritanopia (no blue cones) | #006169 | 0.088 |
| Achromatopsia (no color) | #505050 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00528F
#00528F
oklch(43.1% 0.121 249.7)
- #704500
#704500
oklch(43% 0.093 69.7)
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 #00528F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.019
- Dusk Blue #26538D ΔE 0.021
- Deep Sea Blue #015482 ΔE 0.024
- Cobalt #1E488F ΔE 0.029
- Light Navy Blue #2E5A88 ΔE 0.041
- Twilight Blue #0A437A ΔE 0.052
- Denim Blue #3B5B92 ΔE 0.053
- Peacock Blue #016795 ΔE 0.063
Use #00528F 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.