#305E8B
Closest named color: Light Navy Blue (#2E5A88). oklch(47.1% 0.089 249.8), rgb(48, 94, 139).
Aa
White text reads best on this color (6.77:1).
About this color
#305E8B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.089 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.013 away. White text reads best on it, at 6.77:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 3.09:1 |
| White text | 6.77:1 |
Values
| HEX | #305E8B |
| RGB | rgb(48, 94, 139) |
| HSL | hsl(210, 49%, 37%) |
| OKLCH | oklch(47.1% 0.089 249.8) |
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 #305E8B | 6.77:1 | AA | Lc -88.2 | Fine for body text |
| Black text on #305E8B | 3.09:1 | AA large text | Lc 20.9 | Dividers and decoration only |
| #305E8B text on white | 6.77:1 | AA | Lc 83.2 | Fine for body text |
| #305E8B text on black | 3.09:1 | AA large text | Lc -18.8 | 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 700.
-
Step 50
50
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CEDBE9
oklch(88.6% 0.024 250.1)
-
Step 300
300
#ACC3DC
oklch(80.8% 0.043 250.6)
-
Step 400
400
#80A4CB
oklch(70.6% 0.07 250.8)
-
Step 500
500
#5F8EBD
oklch(63.2% 0.088 249.4)
-
Step 600
600
#4477A9
oklch(55.6% 0.096 249.5)
-
Step 700
700 (this color)
#305E8B
oklch(47.1% 0.089 249.8)
-
Step 800
800
#2D5276
oklch(42.8% 0.074 249.3)
-
Step 900
900
#29445F
oklch(37.8% 0.057 249.6)
-
Step 950
950
#182838
oklch(27.1% 0.037 249.3)
#305E8B 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) | #4B608D | 0.032 |
| Deuteranopia (no green cones) | #3E578A | 0.023 |
| Tritanopia (no blue cones) | #00696E | 0.071 |
| Achromatopsia (no color) | #5B5B5B | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #305E8B
#305E8B
oklch(47.1% 0.089 249.8)
- #7B5119
#7B5119
oklch(47.1% 0.089 69.6)
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 #305E8B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.013
- Denim Blue #3B5B92 ΔE 0.019
- Denim #3B638C ΔE 0.020
- Dusky Blue #475F94 ΔE 0.031
- Peacock Blue #016795 ΔE 0.032
- YInMn Blue #415A77 ΔE 0.035
- Dusk Blue #26538D ΔE 0.036
- Dusk #4E5481 ΔE 0.043
Use #305E8B 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.