#00528B
Closest named color: Light Navy (#155084). oklch(42.9% 0.116 248.2), rgb(0, 82, 139).
Aa
White text reads best on this color (8.14:1).
About this color
#00528B is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.116 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.013 away. White text reads best on it, at 8.14:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.57:1 |
| White text | 8.14:1 |
Values
| HEX | #00528B |
| RGB | rgb(0, 82, 139) |
| HSL | hsl(205, 100%, 27%) |
| OKLCH | oklch(42.9% 0.116 248.2) |
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 #00528B | 8.14:1 | AAA | Lc -92.2 | Preferred for body text |
| Black text on #00528B | 2.57:1 | Fails | Lc 16.5 | Dividers and decoration only |
| #00528B text on white | 8.14:1 | AAA | Lc 87.6 | Fine for body text |
| #00528B text on black | 2.57:1 | Fails | Lc -14.6 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0EBF7
oklch(93.5% 0.02 250.4)
-
Step 200
200
#C6DCF1
oklch(88.5% 0.037 247)
-
Step 300
300
#9FC5EB
oklch(80.9% 0.068 248.7)
-
Step 400
400
#67A6E1
oklch(70.7% 0.109 248.1)
-
Step 500
500
#388ED8
oklch(63% 0.138 248.2)
-
Step 600
600
#0077C6
oklch(55.6% 0.15 248.2)
-
Step 700
700
#0064A7
oklch(49.1% 0.132 247.9)
-
Step 800
800 (this color)
#00528B
oklch(42.9% 0.116 248.2)
-
Step 900
900
#10446F
oklch(37.7% 0.091 248.4)
-
Step 950
950
#0C2841
oklch(27% 0.058 248.6)
#00528B 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) | #35568D | 0.039 |
| Deuteranopia (no green cones) | #1F4A8A | 0.025 |
| Tritanopia (no blue cones) | #006067 | 0.083 |
| Achromatopsia (no color) | #4F4F4F | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00528B
#00528B
oklch(42.9% 0.116 248.2)
- #704400
#704400
oklch(42.8% 0.094 68.6)
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 #00528B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.013
- Deep Sea Blue #015482 ΔE 0.017
- Dusk Blue #26538D ΔE 0.021
- Cobalt #1E488F ΔE 0.031
- Light Navy Blue #2E5A88 ΔE 0.040
- Twilight Blue #0A437A ΔE 0.049
- Denim Blue #3B5B92 ΔE 0.054
- Peacock Blue #016795 ΔE 0.063
Use #00528B 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.