#305C8B
Closest named color: Light Navy Blue (#2E5A88). oklch(46.6% 0.091 251.7), rgb(48, 92, 139).
Aa
White text reads best on this color (6.93:1).
About this color
#305C8B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.091 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.008 away. White text reads best on it, at 6.93:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 3.02:1 |
| White text | 6.93:1 |
Values
| HEX | #305C8B |
| RGB | rgb(48, 92, 139) |
| HSL | hsl(211, 49%, 37%) |
| OKLCH | oklch(46.6% 0.091 251.7) |
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 #305C8B | 6.93:1 | AA | Lc -88.8 | Fine for body text |
| Black text on #305C8B | 3.02:1 | AA large text | Lc 20.3 | Dividers and decoration only |
| #305C8B text on white | 6.93:1 | AA | Lc 83.8 | Fine for body text |
| #305C8B text on black | 3.02:1 | AA large text | Lc -18.2 | 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
#ADC3DD
oklch(80.9% 0.044 252.7)
-
Step 400
400
#80A4CC
oklch(70.7% 0.071 251.5)
-
Step 500
500
#608DBF
oklch(63.1% 0.091 251.9)
-
Step 600
600
#4676AB
oklch(55.6% 0.098 252.1)
-
Step 700
700 (this color)
#305C8B
oklch(46.6% 0.091 251.7)
-
Step 800
800
#2E5177
oklch(42.7% 0.076 251.8)
-
Step 900
900
#294360
oklch(37.6% 0.059 252.1)
-
Step 950
950
#192838
oklch(27.1% 0.036 250.8)
#305C8B 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) | #485E8D | 0.029 |
| Deuteranopia (no green cones) | #3B568A | 0.019 |
| Tritanopia (no blue cones) | #00676D | 0.073 |
| Achromatopsia (no color) | #5A5A5A | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #305C8B
#305C8B
oklch(46.6% 0.091 251.7)
- #795013
#795013
oklch(46.6% 0.091 71.6)
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 #305C8B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.008
- Denim Blue #3B5B92 ΔE 0.017
- Denim #3B638C ΔE 0.025
- Dusk Blue #26538D ΔE 0.031
- Dusky Blue #475F94 ΔE 0.032
- YInMn Blue #415A77 ΔE 0.035
- Peacock Blue #016795 ΔE 0.036
- Dusk #4E5481 ΔE 0.041
Use #305C8B 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.