#305583
Closest named color: Light Navy Blue (#2E5A88). oklch(44.4% 0.087 254.8), rgb(48, 85, 131).
Aa
White text reads best on this color (7.62:1).
About this color
#305583 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.087 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.015 away. White text reads best on it, at 7.62:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.75:1 |
| White text | 7.62:1 |
Values
| HEX | #305583 |
| RGB | rgb(48, 85, 131) |
| HSL | hsl(213, 46%, 35%) |
| OKLCH | oklch(44.4% 0.087 254.8) |
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 #305583 | 7.62:1 | AAA | Lc -91.1 | Preferred for body text |
| Black text on #305583 | 2.75:1 | Fails | Lc 17.7 | Dividers and decoration only |
| #305583 text on white | 7.62:1 | AAA | Lc 86.3 | Fine for body text |
| #305583 text on black | 2.75:1 | Fails | Lc -15.7 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF4
oklch(93.7% 0.015 251.2)
-
Step 200
200
#CDDBEC
oklch(88.6% 0.028 253.2)
-
Step 300
300
#ABC3E2
oklch(80.9% 0.051 254.9)
-
Step 400
400
#7EA3D3
oklch(70.6% 0.082 255.2)
-
Step 500
500
#5C8CC7
oklch(63.1% 0.104 254.3)
-
Step 600
600
#4275B4
oklch(55.6% 0.113 254.7)
-
Step 700
700
#33629B
oklch(49.1% 0.105 254.5)
-
Step 800
800 (this color)
#305583
oklch(44.4% 0.087 254.8)
-
Step 900
900
#274365
oklch(37.8% 0.068 254.1)
-
Step 950
950
#17273B
oklch(26.9% 0.043 254.6)
#305583 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) | #415885 | 0.023 |
| Deuteranopia (no green cones) | #365082 | 0.015 |
| Tritanopia (no blue cones) | #006066 | 0.073 |
| Achromatopsia (no color) | #545454 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #305583
#305583
oklch(44.4% 0.087 254.8)
- #704C0E
#704C0E
oklch(44.6% 0.088 75)
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 #305583, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.015
- Dusk Blue #26538D ΔE 0.021
- Light Navy #155084 ΔE 0.029
- Deep Sea Blue #015482 ΔE 0.030
- Denim Blue #3B5B92 ΔE 0.032
- YInMn Blue #415A77 ΔE 0.035
- Dusk #4E5481 ΔE 0.038
- Twilight #4E518B ΔE 0.043
Use #305583 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.