#2D548B
Closest named color: Dusk Blue (#26538D). oklch(44.5% 0.101 257.3), rgb(45, 84, 139).
Aa
White text reads best on this color (7.62:1).
About this color
#2D548B is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.101 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.008 away. White text reads best on it, at 7.62:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.75:1 |
| White text | 7.62:1 |
Values
| HEX | #2D548B |
| RGB | rgb(45, 84, 139) |
| HSL | hsl(215, 51%, 36%) |
| OKLCH | oklch(44.5% 0.101 257.3) |
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 #2D548B | 7.62:1 | AAA | Lc -91.1 | Preferred for body text |
| Black text on #2D548B | 2.75:1 | Fails | Lc 17.7 | Dividers and decoration only |
| #2D548B text on white | 7.62:1 | AAA | Lc 86.3 | Fine for body text |
| #2D548B text on black | 2.75:1 | Fails | Lc -15.8 | 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
#CCDAEF
oklch(88.4% 0.033 258.4)
-
Step 300
300
#A9C3E7
oklch(81% 0.058 256.6)
-
Step 400
400
#7BA2DB
oklch(70.6% 0.094 257.8)
-
Step 500
500
#588AD2
oklch(63% 0.122 257.5)
-
Step 600
600
#3D73BF
oklch(55.6% 0.132 257.3)
-
Step 700
700
#2F60A5
oklch(49.1% 0.123 257.4)
-
Step 800
800 (this color)
#2D548B
oklch(44.5% 0.101 257.3)
-
Step 900
900
#25426B
oklch(37.8% 0.079 257.2)
-
Step 950
950
#16273F
oklch(27.1% 0.05 257.1)
#2D548B 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) | #3B588D | 0.021 |
| Deuteranopia (no green cones) | #2E508A | 0.011 |
| Tritanopia (no blue cones) | #006169 | 0.082 |
| Achromatopsia (no color) | #545454 | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D548B
#2D548B
oklch(44.5% 0.101 257.3)
- #704C00
#704C00
oklch(44.5% 0.093 77.5)
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 #2D548B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.008
- Light Navy Blue #2E5A88 ΔE 0.020
- Light Navy #155084 ΔE 0.027
- Denim Blue #3B5B92 ΔE 0.029
- Deep Sea Blue #015482 ΔE 0.031
- Cobalt #1E488F ΔE 0.041
- Twilight #4E518B ΔE 0.041
- Dusk #4E5481 ΔE 0.043
Use #2D548B 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.