#305B8B
Closest named color: Light Navy Blue (#2E5A88). oklch(46.4% 0.092 252.7), rgb(48, 91, 139).
Aa
White text reads best on this color (7.01:1).
About this color
#305B8B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.092 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.006 away. White text reads best on it, at 7.01:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.99:1 |
| White text | 7.01:1 |
Values
| HEX | #305B8B |
| RGB | rgb(48, 91, 139) |
| HSL | hsl(212, 49%, 37%) |
| OKLCH | oklch(46.4% 0.092 252.7) |
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 #305B8B | 7.01:1 | AAA | Lc -89.0 | Fine for body text |
| Black text on #305B8B | 2.99:1 | Fails | Lc 19.9 | Dividers and decoration only |
| #305B8B text on white | 7.01:1 | AAA | Lc 84.1 | Fine for body text |
| #305B8B text on black | 2.99:1 | Fails | Lc -17.9 | 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
#CEDBEA
oklch(88.6% 0.025 251.9)
-
Step 300
300
#ADC3DD
oklch(80.9% 0.044 252.7)
-
Step 400
400
#81A4CC
oklch(70.7% 0.07 252.1)
-
Step 500
500
#608DBF
oklch(63.1% 0.091 251.9)
-
Step 600
600
#4676AC
oklch(55.6% 0.1 252.6)
-
Step 700
700 (this color)
#305B8B
oklch(46.4% 0.092 252.7)
-
Step 800
800
#2F5178
oklch(42.8% 0.076 253)
-
Step 900
900
#2A4360
oklch(37.6% 0.059 253)
-
Step 950
950
#192738
oklch(26.9% 0.037 253.8)
#305B8B 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) | #465E8D | 0.028 |
| Deuteranopia (no green cones) | #3A558A | 0.019 |
| Tritanopia (no blue cones) | #00666C | 0.074 |
| Achromatopsia (no color) | #595959 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #305B8B
#305B8B
oklch(46.4% 0.092 252.7)
- #78500F
#78500F
oklch(46.5% 0.092 73.3)
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 #305B8B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.006
- Denim Blue #3B5B92 ΔE 0.017
- Dusk Blue #26538D ΔE 0.028
- Denim #3B638C ΔE 0.028
- Dusky Blue #475F94 ΔE 0.033
- YInMn Blue #415A77 ΔE 0.036
- Peacock Blue #016795 ΔE 0.038
- Dusk #4E5481 ΔE 0.040
Use #305B8B 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.