#18528A
Closest named color: Light Navy (#155084). oklch(43.2% 0.11 251.4), rgb(24, 82, 138).
Aa
White text reads best on this color (8.03:1).
About this color
#18528A is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.110 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.011 away. White text reads best on it, at 8.03:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.61:1 |
| White text | 8.03:1 |
Values
| HEX | #18528A |
| RGB | rgb(24, 82, 138) |
| HSL | hsl(209, 70%, 32%) |
| OKLCH | oklch(43.2% 0.11 251.4) |
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 #18528A | 8.03:1 | AAA | Lc -92.2 | Preferred for body text |
| Black text on #18528A | 2.61:1 | Fails | Lc 16.5 | Dividers and decoration only |
| #18528A text on white | 8.03:1 | AAA | Lc 87.5 | Fine for body text |
| #18528A text on black | 2.61:1 | Fails | Lc -14.7 | 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
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C9DBF1
oklch(88.5% 0.036 253.5)
-
Step 300
300
#A3C4E9
oklch(80.9% 0.064 251.5)
-
Step 400
400
#70A5DF
oklch(70.8% 0.102 251.5)
-
Step 500
500
#478DD6
oklch(63.1% 0.131 251.5)
-
Step 600
600
#2575C3
oklch(55.5% 0.143 251.7)
-
Step 700
700
#1662A8
oklch(49% 0.132 251.5)
-
Step 800
800 (this color)
#18528A
oklch(43.2% 0.11 251.4)
-
Step 900
900
#1A436D
oklch(37.6% 0.085 251.6)
-
Step 950
950
#102840
oklch(27.1% 0.054 250.5)
#18528A 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) | #37568C | 0.032 |
| Deuteranopia (no green cones) | #244C89 | 0.018 |
| Tritanopia (no blue cones) | #005F67 | 0.080 |
| Achromatopsia (no color) | #505050 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18528A
#18528A
oklch(43.2% 0.11 251.4)
- #704600
#704600
oklch(43.2% 0.093 70.8)
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 #18528A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.011
- Dusk Blue #26538D ΔE 0.013
- Deep Sea Blue #015482 ΔE 0.018
- Cobalt #1E488F ΔE 0.031
- Light Navy Blue #2E5A88 ΔE 0.033
- Denim Blue #3B5B92 ΔE 0.046
- Twilight Blue #0A437A ΔE 0.051
- Twilight #4E518B ΔE 0.059
Use #18528A 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.