#477EE4
Closest named color: Dark Sky Blue (#448EE4). oklch(60.7% 0.165 261.5), rgb(71, 126, 228).
Aa
Black text reads best on this color (5.37:1).
About this color
#477EE4 is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.165 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.042 away. Black text reads best on it, at 5.37:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.165) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.37:1 |
| White text | 3.90:1 |
Values
| HEX | #477EE4 |
| RGB | rgb(71, 126, 228) |
| HSL | hsl(219, 74%, 59%) |
| OKLCH | oklch(60.7% 0.165 261.5) |
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 #477EE4 | 3.90:1 | AA large text | Lc -71.7 | Content text, not long reading |
| Black text on #477EE4 | 5.37:1 | AA | Lc 37.9 | Non-text elements, placeholder text |
| #477EE4 text on white | 3.90:1 | AA large text | Lc 66.2 | Content text, not long reading |
| #477EE4 text on black | 5.37:1 | AA | Lc -35.5 | 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
#E1EAFA
oklch(93.5% 0.024 262.1)
-
Step 200
200
#C9DAF8
oklch(88.5% 0.045 261.9)
-
Step 300
300
#A4C1F6
oklch(80.8% 0.082 262.3)
-
Step 400
400
#73A0F1
oklch(70.8% 0.129 261.5)
-
Step 500
500 (this color)
#477EE4
oklch(60.7% 0.165 261.5)
-
Step 600
600
#326CDB
oklch(55.6% 0.181 261.7)
-
Step 700
700
#255ABE
oklch(49.2% 0.167 261.6)
-
Step 800
800
#204A99
oklch(42.7% 0.138 261.5)
-
Step 900
900
#1F3F7A
oklch(37.8% 0.108 261.4)
-
Step 950
950
#132547
oklch(26.9% 0.068 261.9)
#477EE4 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) | #4B89E8 | 0.030 |
| Deuteranopia (no green cones) | #2D7AE2 | 0.025 |
| Tritanopia (no blue cones) | #0096A6 | 0.133 |
| Achromatopsia (no color) | #818181 | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #477EE4
#477EE4
oklch(60.7% 0.165 261.5)
- #A87900
#A87900
oklch(60.7% 0.125 81.3)
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 #477EE4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.042
- Soft Blue #6488EA ΔE 0.044
- Clear Blue #247AFD ΔE 0.046
- Cornflower #6A79F7 ΔE 0.050
- Royal Blue #4169E1 ΔE 0.055
- Water Blue #0E87CC ΔE 0.056
- Dodger Blue #1E90FF ΔE 0.057
- Windows Blue #3778BF ΔE 0.060
Use #477EE4 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.