#305FAF
Closest named color: Mid Blue (#276AB3). oklch(49.6% 0.138 260.3), rgb(48, 95, 175).
Aa
White text reads best on this color (6.21:1).
About this color
#305FAF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.138 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.030 away. White text reads best on it, at 6.21:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.38:1 |
| White text | 6.21:1 |
Values
| HEX | #305FAF |
| RGB | rgb(48, 95, 175) |
| HSL | hsl(218, 57%, 44%) |
| OKLCH | oklch(49.6% 0.138 260.3) |
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 #305FAF | 6.21:1 | AA | Lc -85.8 | Fine for body text |
| Black text on #305FAF | 3.38:1 | AA large text | Lc 23.4 | Dividers and decoration only |
| #305FAF text on white | 6.21:1 | AA | Lc 80.6 | Fine for body text |
| #305FAF text on black | 3.38:1 | AA large text | Lc -21.2 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CBDAF2
oklch(88.5% 0.037 259.8)
-
Step 300
300
#A8C2EC
oklch(80.9% 0.066 259.9)
-
Step 400
400
#7AA1E3
oklch(70.7% 0.106 260.6)
-
Step 500
500
#5788DB
oklch(63% 0.136 260.4)
-
Step 600
600
#3C70C9
oklch(55.5% 0.149 260.4)
-
Step 700
700 (this color)
#305FAF
oklch(49.6% 0.138 260.3)
-
Step 800
800
#274D8C
oklch(42.7% 0.113 259.9)
-
Step 900
900
#244070
oklch(37.5% 0.089 260.5)
-
Step 950
950
#162642
oklch(27% 0.057 260.9)
#305FAF 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) | #3667B2 | 0.024 |
| Deuteranopia (no green cones) | #1C5BAD | 0.020 |
| Tritanopia (no blue cones) | #00727E | 0.110 |
| Achromatopsia (no color) | #616161 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #305FAF
#305FAF
oklch(49.6% 0.138 260.3)
- #805A00
#805A00
oklch(49.5% 0.103 80)
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 #305FAF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.030
- French Blue #436BAD ΔE 0.042
- Denim Blue #3B5B92 ΔE 0.046
- Dusky Blue #475F94 ΔE 0.048
- Peacock Blue #016795 ΔE 0.057
- Denim #3B638C ΔE 0.061
- Dusk Blue #26538D ΔE 0.063
- Flat Blue #3C73A8 ΔE 0.063
Use #305FAF 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.