#2B528C
Closest named color: Dusk Blue (#26538D). oklch(44% 0.106 258.2), rgb(43, 82, 140).
Aa
White text reads best on this color (7.81:1).
About this color
#2B528C is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.106 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 7.81:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.68:1 |
| White text | 7.81:1 |
Values
| HEX | #2B528C |
| RGB | rgb(43, 82, 140) |
| HSL | hsl(216, 53%, 36%) |
| OKLCH | oklch(44% 0.106 258.2) |
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 #2B528C | 7.81:1 | AAA | Lc -91.6 | Preferred for body text |
| Black text on #2B528C | 2.68:1 | Fails | Lc 17.1 | Dividers and decoration only |
| #2B528C text on white | 7.81:1 | AAA | Lc 86.9 | Fine for body text |
| #2B528C text on black | 2.68:1 | Fails | Lc -15.2 | 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
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CCDAF0
oklch(88.5% 0.034 259.4)
-
Step 300
300
#A8C2E9
oklch(80.8% 0.062 258.4)
-
Step 400
400
#7AA2DE
oklch(70.7% 0.099 258.3)
-
Step 500
500
#578AD5
oklch(63.1% 0.126 257.9)
-
Step 600
600
#3C72C2
oklch(55.5% 0.137 258.2)
-
Step 700
700
#2E5FA8
oklch(49% 0.129 258.4)
-
Step 800
800 (this color)
#2B528C
oklch(44% 0.106 258.2)
-
Step 900
900
#24416D
oklch(37.6% 0.084 258.5)
-
Step 950
950
#162740
oklch(27.2% 0.052 257.9)
#2B528C 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) | #37578E | 0.021 |
| Deuteranopia (no green cones) | #294E8B | 0.012 |
| Tritanopia (no blue cones) | #005F68 | 0.084 |
| Achromatopsia (no color) | #525252 | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B528C
#2B528C
oklch(44% 0.106 258.2)
- #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 #2B528C, 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 0.024
- Light Navy Blue #2E5A88 ΔE 0.027
- Deep Sea Blue #015482 ΔE 0.031
- Cobalt #1E488F ΔE 0.034
- Denim Blue #3B5B92 ΔE 0.034
- Twilight #4E518B ΔE 0.044
- Dusk #4E5481 ΔE 0.048
Use #2B528C 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.