#477EC7
Closest named color: Windows Blue (#3778BF). oklch(59% 0.127 256.1), rgb(71, 126, 199).
Aa
Black text reads best on this color (5.07:1).
About this color
#477EC7 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.127 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.026 away. Black text reads best on it, at 5.07:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 5.07:1 |
| White text | 4.13:1 |
Values
| HEX | #477EC7 |
| RGB | rgb(71, 126, 199) |
| HSL | hsl(214, 53%, 53%) |
| OKLCH | oklch(59% 0.127 256.1) |
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 #477EC7 | 4.13:1 | AA large text | Lc -73.7 | Content text, not long reading |
| Black text on #477EC7 | 5.07:1 | AA | Lc 35.9 | Non-text elements, placeholder text |
| #477EC7 text on white | 4.13:1 | AA large text | Lc 68.2 | Content text, not long reading |
| #477EC7 text on black | 5.07:1 | AA | Lc -33.4 | 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 600.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EBF5
oklch(93.7% 0.016 253.9)
-
Step 200
200
#CCDAEE
oklch(88.4% 0.031 257.2)
-
Step 300
300
#A9C3E6
oklch(81% 0.057 255.9)
-
Step 400
400
#7BA3D9
oklch(70.7% 0.091 256.1)
-
Step 500
500
#588BCF
oklch(63.1% 0.117 256)
-
Step 600
600 (this color)
#477EC7
oklch(59% 0.127 256.1)
-
Step 700
700
#2F61A2
oklch(49.1% 0.118 256)
-
Step 800
800
#284F83
oklch(42.6% 0.098 256.3)
-
Step 900
900
#254269
oklch(37.6% 0.076 256.3)
-
Step 950
950
#16273E
oklch(27% 0.049 256.3)
#477EC7 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) | #5E83CA | 0.030 |
| Deuteranopia (no green cones) | #4C77C6 | 0.019 |
| Tritanopia (no blue cones) | #008F99 | 0.104 |
| Achromatopsia (no color) | #7D7D7D | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #477EC7
#477EC7
oklch(59% 0.127 256.1)
- #A67100
#A67100
oklch(58.9% 0.124 76.3)
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 #477EC7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.026
- Cool Blue #4984B8 ΔE 0.032
- Steel Blue #4682B4 ΔE 0.034
- Water Blue #0E87CC ΔE 0.035
- Off Blue #5684AE ΔE 0.048
- Nice Blue #107AB0 ΔE 0.053
- Dusty Blue #5A86AD ΔE 0.055
- Flat Blue #3C73A8 ΔE 0.055
Use #477EC7 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.