#305387
Closest named color: Dusk Blue (#26538D). oklch(44.2% 0.095 258.1), rgb(48, 83, 135).
Aa
White text reads best on this color (7.74:1).
About this color
#305387 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.095 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 7.74:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.71:1 |
| White text | 7.74:1 |
Values
| HEX | #305387 |
| RGB | rgb(48, 83, 135) |
| HSL | hsl(216, 48%, 36%) |
| OKLCH | oklch(44.2% 0.095 258.1) |
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 #305387 | 7.74:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #305387 | 2.71:1 | Fails | Lc 17.3 | Dividers and decoration only |
| #305387 text on white | 7.74:1 | AAA | Lc 86.7 | Fine for body text |
| #305387 text on black | 2.71:1 | Fails | Lc -15.4 | 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
#E3EAF5
oklch(93.5% 0.017 259.4)
-
Step 200
200
#CDDAEE
oklch(88.5% 0.031 258.9)
-
Step 300
300
#ABC2E5
oklch(80.9% 0.056 258.7)
-
Step 400
400
#7EA2D8
oklch(70.6% 0.089 258.3)
-
Step 500
500
#5D8ACE
oklch(63.1% 0.114 258.4)
-
Step 600
600
#4373BB
oklch(55.6% 0.124 258.3)
-
Step 700
700
#3460A1
oklch(49% 0.116 258.1)
-
Step 800
800 (this color)
#305387
oklch(44.2% 0.095 258.1)
-
Step 900
900
#284269
oklch(37.8% 0.074 258.3)
-
Step 950
950
#18273D
oklch(27.1% 0.046 257.8)
#305387 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) | #3C5789 | 0.020 |
| Deuteranopia (no green cones) | #304F86 | 0.012 |
| Tritanopia (no blue cones) | #005F66 | 0.080 |
| Achromatopsia (no color) | #535353 | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #305387
#305387
oklch(44.2% 0.095 258.1)
- #6F4C00
#6F4C00
oklch(44.4% 0.092 78.3)
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 #305387, 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 Blue #2E5A88 ΔE 0.020
- Light Navy #155084 ΔE 0.026
- Deep Sea Blue #015482 ΔE 0.031
- Denim Blue #3B5B92 ΔE 0.032
- Twilight #4E518B ΔE 0.040
- Dusk #4E5481 ΔE 0.040
- Cobalt #1E488F ΔE 0.042
Use #305387 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.