#477DD8
Closest named color: Windows Blue (#3778BF). oklch(59.8% 0.151 260.2), rgb(71, 125, 216).
Aa
Black text reads best on this color (5.19:1).
About this color
#477DD8 is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.151 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.043 away. Black text reads best on it, at 5.19:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.151) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 5.19:1 |
| White text | 4.04:1 |
Values
| HEX | #477DD8 |
| RGB | rgb(71, 125, 216) |
| HSL | hsl(218, 65%, 56%) |
| OKLCH | oklch(59.8% 0.151 260.2) |
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 #477DD8 | 4.04:1 | AA large text | Lc -72.9 | Content text, not long reading |
| Black text on #477DD8 | 5.19:1 | AA | Lc 36.7 | Non-text elements, placeholder text |
| #477DD8 text on white | 4.04:1 | AA large text | Lc 67.4 | Content text, not long reading |
| #477DD8 text on black | 5.19:1 | AA | Lc -34.3 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF9
oklch(93.5% 0.022 263.2)
-
Step 200
200
#CADAF5
oklch(88.5% 0.041 260.9)
-
Step 300
300
#A5C2F1
oklch(80.9% 0.074 260)
-
Step 400
400
#75A1EA
oklch(70.7% 0.118 260.2)
-
Step 500
500 (this color)
#477DD8
oklch(59.8% 0.151 260.2)
-
Step 600
600
#356FD1
oklch(55.6% 0.163 260.2)
-
Step 700
700
#275CB5
oklch(49% 0.152 260.2)
-
Step 800
800
#224C93
oklch(42.8% 0.126 260.2)
-
Step 900
900
#204075
oklch(37.7% 0.098 259.9)
-
Step 950
950
#142644
oklch(27% 0.061 260.1)
#477DD8 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) | #5286DC | 0.028 |
| Deuteranopia (no green cones) | #3B78D6 | 0.019 |
| Tritanopia (no blue cones) | #0092A0 | 0.122 |
| Achromatopsia (no color) | #7E7E7E | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #477DD8
#477DD8
oklch(59.8% 0.151 260.2)
- #A57600
#A57600
oklch(59.8% 0.124 80.7)
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 #477DD8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.043
- Water Blue #0E87CC ΔE 0.045
- Dark Sky Blue #448EE4 ΔE 0.046
- Soft Blue #6488EA ΔE 0.052
- Royal Blue #4169E1 ΔE 0.056
- Cool Blue #4984B8 ΔE 0.057
- Steel Blue #4682B4 ΔE 0.061
- Clear Blue #247AFD ΔE 0.061
Use #477DD8 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.