#2D529F
Closest named color: Dusk Blue (#26538D). oklch(45.4% 0.132 262.9), rgb(45, 82, 159).
Aa
White text reads best on this color (7.44:1).
About this color
#2D529F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.132 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.031 away. White text reads best on it, at 7.44:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.81:1 |
| White text | 7.44:1 |
Values
| HEX | #2D529F |
| RGB | rgb(45, 82, 159) |
| HSL | hsl(221, 56%, 40%) |
| OKLCH | oklch(45.4% 0.132 262.9) |
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 #2D529F | 7.44:1 | AAA | Lc -90.4 | Preferred for body text |
| Black text on #2D529F | 2.81:1 | Fails | Lc 18.5 | Dividers and decoration only |
| #2D529F text on white | 7.44:1 | AAA | Lc 85.6 | Fine for body text |
| #2D529F text on black | 2.81:1 | Fails | Lc -16.5 | 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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAF9
oklch(93.5% 0.022 263.2)
-
Step 200
200
#CADAF6
oklch(88.5% 0.042 261.7)
-
Step 300
300
#A6C1F3
oklch(80.8% 0.077 262.6)
-
Step 400
400
#779FEE
oklch(70.6% 0.124 263.1)
-
Step 500
500
#5585E8
oklch(63.1% 0.158 263.1)
-
Step 600
600
#3A6CD6
oklch(55.5% 0.172 263)
-
Step 700
700
#2D5ABA
oklch(49.2% 0.16 263)
-
Step 800
800 (this color)
#2D529F
oklch(45.4% 0.132 262.9)
-
Step 900
900
#233F78
oklch(37.8% 0.103 262.8)
-
Step 950
950
#152546
oklch(27% 0.065 263.2)
#2D529F 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) | #295BA2 | 0.024 |
| Deuteranopia (no green cones) | #0B509D | 0.025 |
| Tritanopia (no blue cones) | #006471 | 0.105 |
| Achromatopsia (no color) | #555555 | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D529F
#2D529F
oklch(45.4% 0.132 262.9)
- #705100
#705100
oklch(45.6% 0.094 83)
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 #2D529F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.031
- Denim Blue #3B5B92 ΔE 0.040
- Cobalt #1E488F ΔE 0.041
- Light Navy Blue #2E5A88 ΔE 0.048
- Light Navy #155084 ΔE 0.050
- Twilight #4E518B ΔE 0.051
- Blueberry #464196 ΔE 0.051
- Dusky Blue #475F94 ΔE 0.056
Use #2D529F 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.