#4F77D3
Closest named color: Windows Blue (#3778BF). oklch(58.5% 0.148 264.6), rgb(79, 119, 211).
Aa
Black text reads best on this color (4.91:1).
About this color
#4F77D3 is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.148 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.040 away. Black text reads best on it, at 4.91:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.148) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.91:1 |
| White text | 4.27:1 |
Values
| HEX | #4F77D3 |
| RGB | rgb(79, 119, 211) |
| HSL | hsl(222, 60%, 57%) |
| OKLCH | oklch(58.5% 0.148 264.6) |
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 #4F77D3 | 4.27:1 | AA large text | Lc -74.8 | Content text, not long reading |
| Black text on #4F77D3 | 4.91:1 | AA | Lc 34.8 | Non-text elements, placeholder text |
| #4F77D3 text on white | 4.27:1 | AA large text | Lc 69.3 | Content text, not long reading |
| #4F77D3 text on black | 4.91:1 | AA | Lc -32.4 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CDD9F2
oklch(88.4% 0.037 265.1)
-
Step 300
300
#ABC1ED
oklch(80.9% 0.067 264.1)
-
Step 400
400
#7F9FE3
oklch(70.6% 0.106 264.5)
-
Step 500
500
#6086DC
oklch(63.1% 0.137 264.8)
-
Step 600
600 (this color)
#4F77D3
oklch(58.5% 0.148 264.6)
-
Step 700
700
#385BAE
oklch(49% 0.139 264.6)
-
Step 800
800
#2F4B8D
oklch(42.7% 0.114 264.7)
-
Step 900
900
#293F70
oklch(37.6% 0.089 264.3)
-
Step 950
950
#182542
oklch(26.9% 0.057 264.6)
#4F77D3 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) | #4C81D7 | 0.026 |
| Deuteranopia (no green cones) | #3875D1 | 0.023 |
| Tritanopia (no blue cones) | #008C9B | 0.125 |
| Achromatopsia (no color) | #7A7A7A | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F77D3
#4F77D3
oklch(58.5% 0.148 264.6)
- #9D7500
#9D7500
oklch(58.6% 0.12 84.6)
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 #4F77D3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.040
- Royal Blue #4169E1 ΔE 0.048
- Water Blue #0E87CC ΔE 0.057
- Cool Blue #4984B8 ΔE 0.061
- Soft Blue #6488EA ΔE 0.061
- Dark Sky Blue #448EE4 ΔE 0.061
- Dark Periwinkle #665FD1 ΔE 0.063
- Steel Blue #4682B4 ΔE 0.063
Use #4F77D3 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.