#2D5186
Closest named color: Dusk Blue (#26538D). oklch(43.5% 0.097 258), rgb(45, 81, 134).
Aa
White text reads best on this color (7.97:1).
About this color
#2D5186 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.097 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.013 away. White text reads best on it, at 7.97:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.63:1 |
| White text | 7.97:1 |
Values
| HEX | #2D5186 |
| RGB | rgb(45, 81, 134) |
| HSL | hsl(216, 50%, 35%) |
| OKLCH | oklch(43.5% 0.097 258) |
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 #2D5186 | 7.97:1 | AAA | Lc -92.1 | Preferred for body text |
| Black text on #2D5186 | 2.63:1 | Fails | Lc 16.6 | Dividers and decoration only |
| #2D5186 text on white | 7.97:1 | AAA | Lc 87.4 | Fine for body text |
| #2D5186 text on black | 2.63:1 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF5
oklch(93.5% 0.017 259.4)
-
Step 200
200
#CDDAEF
oklch(88.5% 0.032 260)
-
Step 300
300
#AAC2E6
oklch(80.8% 0.057 258.4)
-
Step 400
400
#7DA2D9
oklch(70.6% 0.091 258.1)
-
Step 500
500
#5C8ACF
oklch(63.1% 0.116 258.3)
-
Step 600
600
#4173BC
oklch(55.6% 0.126 257.9)
-
Step 700
700
#3360A2
oklch(49.1% 0.117 258)
-
Step 800
800 (this color)
#2D5186
oklch(43.5% 0.097 258)
-
Step 900
900
#274269
oklch(37.7% 0.075 257.6)
-
Step 950
950
#17273E
oklch(27.1% 0.048 257.5)
#2D5186 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) | #3A5588 | 0.020 |
| Deuteranopia (no green cones) | #2D4D85 | 0.012 |
| Tritanopia (no blue cones) | #005D65 | 0.079 |
| Achromatopsia (no color) | #515151 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D5186
#2D5186
oklch(43.5% 0.097 258)
- #6C4A00
#6C4A00
oklch(43.6% 0.091 78.5)
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 #2D5186, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.013
- Light Navy #155084 ΔE 0.020
- Light Navy Blue #2E5A88 ΔE 0.027
- Deep Sea Blue #015482 ΔE 0.028
- Cobalt #1E488F ΔE 0.036
- Denim Blue #3B5B92 ΔE 0.038
- Twilight #4E518B ΔE 0.044
- Dusk #4E5481 ΔE 0.045
Use #2D5186 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.