#2A528B
Closest named color: Dusk Blue (#26538D). oklch(43.9% 0.105 257.5), rgb(42, 82, 139).
Aa
White text reads best on this color (7.84:1).
About this color
#2A528B is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.105 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.005 away. White text reads best on it, at 7.84:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.67:1 |
| White text | 7.84:1 |
Values
| HEX | #2A528B |
| RGB | rgb(42, 82, 139) |
| HSL | hsl(215, 54%, 35%) |
| OKLCH | oklch(43.9% 0.105 257.5) |
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 #2A528B | 7.84:1 | AAA | Lc -91.7 | Preferred for body text |
| Black text on #2A528B | 2.67:1 | Fails | Lc 17.0 | Dividers and decoration only |
| #2A528B text on white | 7.84:1 | AAA | Lc 87.0 | Fine for body text |
| #2A528B text on black | 2.67:1 | Fails | Lc -15.1 | Dividers and decoration only |
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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EBF6
oklch(93.7% 0.017 256.3)
-
Step 200
200
#CBDAF0
oklch(88.4% 0.034 257.9)
-
Step 300
300
#A8C3E9
oklch(81% 0.061 256.9)
-
Step 400
400
#7AA2DD
oklch(70.6% 0.098 258)
-
Step 500
500
#578AD4
oklch(63.1% 0.125 257.7)
-
Step 600
600
#3B73C1
oklch(55.6% 0.135 257.2)
-
Step 700
700
#2D60A7
oklch(49.1% 0.126 257.3)
-
Step 800
800 (this color)
#2A528B
oklch(43.9% 0.105 257.5)
-
Step 900
900
#24426C
oklch(37.8% 0.081 257.1)
-
Step 950
950
#16273F
oklch(27.1% 0.05 257.1)
#2A528B 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) | #38578D | 0.023 |
| Deuteranopia (no green cones) | #294E8A | 0.012 |
| Tritanopia (no blue cones) | #005F67 | 0.084 |
| Achromatopsia (no color) | #525252 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A528B
#2A528B
oklch(43.9% 0.105 257.5)
- #6E4B00
#6E4B00
oklch(44% 0.092 78)
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 #2A528B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.005
- Light Navy #155084 ΔE 0.022
- Light Navy Blue #2E5A88 ΔE 0.026
- Deep Sea Blue #015482 ΔE 0.029
- Cobalt #1E488F ΔE 0.034
- Denim Blue #3B5B92 ΔE 0.035
- Twilight #4E518B ΔE 0.045
- Dusk #4E5481 ΔE 0.048
Use #2A528B 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.