#305FA6
Closest named color: Denim Blue (#3B5B92). oklch(49% 0.125 258.5), rgb(48, 95, 166).
Aa
White text reads best on this color (6.33:1).
About this color
#305FA6 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.125 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.033 away. White text reads best on it, at 6.33:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.31:1 |
| White text | 6.33:1 |
Values
| HEX | #305FA6 |
| RGB | rgb(48, 95, 166) |
| HSL | hsl(216, 55%, 42%) |
| OKLCH | oklch(49% 0.125 258.5) |
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 #305FA6 | 6.33:1 | AA | Lc -86.4 | Fine for body text |
| Black text on #305FA6 | 3.31:1 | AA large text | Lc 22.8 | Dividers and decoration only |
| #305FA6 text on white | 6.33:1 | AA | Lc 81.2 | Fine for body text |
| #305FA6 text on black | 3.31:1 | AA large text | Lc -20.6 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CCDAF0
oklch(88.5% 0.034 259.4)
-
Step 300
300
#A9C2E8
oklch(80.8% 0.061 258.7)
-
Step 400
400
#7BA2DD
oklch(70.7% 0.097 258.5)
-
Step 500
500
#598AD4
oklch(63.2% 0.124 258.4)
-
Step 600
600
#3E72C1
oklch(55.5% 0.135 258.6)
-
Step 700
700 (this color)
#305FA6
oklch(49% 0.125 258.5)
-
Step 800
800
#294E87
oklch(42.7% 0.104 258.8)
-
Step 900
900
#25416C
oklch(37.6% 0.082 258.7)
-
Step 950
950
#16273F
oklch(27.1% 0.05 257.1)
#305FA6 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) | #3D65A9 | 0.023 |
| Deuteranopia (no green cones) | #295AA5 | 0.016 |
| Tritanopia (no blue cones) | #006F7A | 0.099 |
| Achromatopsia (no color) | #5F5F5F | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #305FA6
#305FA6
oklch(49% 0.125 258.5)
- #7F5800
#7F5800
oklch(49% 0.102 78.8)
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 #305FA6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.033
- Mid Blue #276AB3 ΔE 0.034
- Dusky Blue #475F94 ΔE 0.037
- French Blue #436BAD ΔE 0.042
- Peacock Blue #016795 ΔE 0.045
- Denim #3B638C ΔE 0.047
- Light Navy Blue #2E5A88 ΔE 0.049
- Dusk Blue #26538D ΔE 0.052
Use #305FA6 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.