#305690
Closest named color: Dusk Blue (#26538D). oklch(45.5% 0.105 258.6), rgb(48, 86, 144).
Aa
White text reads best on this color (7.34:1).
About this color
#305690 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.105 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.015 away. White text reads best on it, at 7.34:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.85:1 |
| White text | 7.34:1 |
Values
| HEX | #305690 |
| RGB | rgb(48, 86, 144) |
| HSL | hsl(216, 50%, 38%) |
| OKLCH | oklch(45.5% 0.105 258.6) |
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 #305690 | 7.34:1 | AAA | Lc -90.2 | Preferred for body text |
| Black text on #305690 | 2.85:1 | Fails | Lc 18.7 | Dividers and decoration only |
| #305690 text on white | 7.34:1 | AAA | Lc 85.3 | Fine for body text |
| #305690 text on black | 2.85:1 | Fails | Lc -16.7 | 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
#A9C2E9
oklch(80.9% 0.062 259.2)
-
Step 400
400
#7BA2DE
oklch(70.7% 0.098 258.8)
-
Step 500
500
#598AD4
oklch(63.2% 0.124 258.4)
-
Step 600
600
#3E72C2
oklch(55.6% 0.137 258.8)
-
Step 700
700
#305FA7
oklch(49% 0.127 258.8)
-
Step 800
800 (this color)
#305690
oklch(45.5% 0.105 258.6)
-
Step 900
900
#25416C
oklch(37.6% 0.082 258.7)
-
Step 950
950
#16273F
oklch(27.1% 0.05 257.1)
#305690 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) | #3C5B92 | 0.021 |
| Deuteranopia (no green cones) | #2E528F | 0.012 |
| Tritanopia (no blue cones) | #00636C | 0.085 |
| Achromatopsia (no color) | #565656 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #305690
#305690
oklch(45.5% 0.105 258.6)
- #734F00
#734F00
oklch(45.5% 0.095 78.4)
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 #305690, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.015
- Light Navy Blue #2E5A88 ΔE 0.020
- Denim Blue #3B5B92 ΔE 0.020
- Light Navy #155084 ΔE 0.036
- Twilight #4E518B ΔE 0.038
- Deep Sea Blue #015482 ΔE 0.040
- Dusky Blue #475F94 ΔE 0.040
- Dusk #4E5481 ΔE 0.043
Use #305690 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.