#447BDB
Closest named color: Windows Blue (#3778BF). oklch(59.4% 0.158 260.7), rgb(68, 123, 219).
Aa
Black text reads best on this color (5.10:1).
About this color
#447BDB is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.158 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.046 away. Black text reads best on it, at 5.10:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.158) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 5.10:1 |
| White text | 4.11:1 |
Values
| HEX | #447BDB |
| RGB | rgb(68, 123, 219) |
| HSL | hsl(218, 68%, 56%) |
| OKLCH | oklch(59.4% 0.158 260.7) |
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 #447BDB | 4.11:1 | AA large text | Lc -73.5 | Content text, not long reading |
| Black text on #447BDB | 5.10:1 | AA | Lc 36.1 | Non-text elements, placeholder text |
| #447BDB text on white | 4.11:1 | AA large text | Lc 68.0 | Content text, not long reading |
| #447BDB text on black | 5.10:1 | AA | Lc -33.7 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAF9
oklch(93.5% 0.023 260.7)
-
Step 200
200
#C9DAF6
oklch(88.4% 0.043 260.4)
-
Step 300
300
#A4C2F3
oklch(80.9% 0.077 260.1)
-
Step 400
400
#73A0ED
oklch(70.6% 0.124 260.7)
-
Step 500
500 (this color)
#447BDB
oklch(59.4% 0.158 260.7)
-
Step 600
600
#336ED6
oklch(55.6% 0.172 260.8)
-
Step 700
700
#255BB9
oklch(49% 0.159 260.7)
-
Step 800
800
#204B96
oklch(42.7% 0.132 260.7)
-
Step 900
900
#1F3F77
oklch(37.6% 0.103 260.7)
-
Step 950
950
#132646
oklch(27.1% 0.065 260.2)
#447BDB 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) | #4C84DF | 0.026 |
| Deuteranopia (no green cones) | #3177D9 | 0.020 |
| Tritanopia (no blue cones) | #0091A0 | 0.127 |
| Achromatopsia (no color) | #7D7D7D | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #447BDB
#447BDB
oklch(59.4% 0.158 260.7)
- #A47500
#A47500
oklch(59.4% 0.123 80.5)
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 #447BDB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.046
- Royal Blue #4169E1 ΔE 0.049
- Water Blue #0E87CC ΔE 0.050
- Dark Sky Blue #448EE4 ΔE 0.051
- Clear Blue #247AFD ΔE 0.055
- Soft Blue #6488EA ΔE 0.055
- Cerulean Blue #056EEE ΔE 0.060
- Cornflower #6A79F7 ΔE 0.061
Use #447BDB 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.