#4B7FD3
Closest named color: Windows Blue (#3778BF). oklch(60.1% 0.14 259.6), rgb(75, 127, 211).
Aa
Black text reads best on this color (5.27:1).
About this color
#4B7FD3 is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.140 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.041 away. Black text reads best on it, at 5.27:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.140) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 5.27:1 |
| White text | 3.98:1 |
Values
| HEX | #4B7FD3 |
| RGB | rgb(75, 127, 211) |
| HSL | hsl(217, 61%, 56%) |
| OKLCH | oklch(60.1% 0.14 259.6) |
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 #4B7FD3 | 3.98:1 | AA large text | Lc -72.4 | Content text, not long reading |
| Black text on #4B7FD3 | 5.27:1 | AA | Lc 37.2 | Non-text elements, placeholder text |
| #4B7FD3 text on white | 3.98:1 | AA large text | Lc 66.9 | Content text, not long reading |
| #4B7FD3 text on black | 5.27:1 | AA | Lc -34.8 | 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
#E2EAF8
oklch(93.5% 0.021 261.8)
-
Step 200
200
#CBDAF3
oklch(88.5% 0.038 260.7)
-
Step 300
300
#A7C2EE
oklch(80.9% 0.069 260.1)
-
Step 400
400
#77A1E5
oklch(70.6% 0.11 259.7)
-
Step 500
500 (this color)
#4B7FD3
oklch(60.1% 0.14 259.6)
-
Step 600
600
#3870CB
oklch(55.5% 0.153 259.7)
-
Step 700
700
#2B5EB0
oklch(49.2% 0.142 259.6)
-
Step 800
800
#244D8E
oklch(42.7% 0.117 259.3)
-
Step 900
900
#224171
oklch(37.8% 0.09 258.9)
-
Step 950
950
#152642
oklch(27% 0.057 259.9)
#4B7FD3 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) | #5986D6 | 0.026 |
| Deuteranopia (no green cones) | #457AD1 | 0.016 |
| Tritanopia (no blue cones) | #00929F | 0.115 |
| Achromatopsia (no color) | #7F7F7F | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B7FD3
#4B7FD3
oklch(60.1% 0.14 259.6)
- #A77600
#A77600
oklch(60% 0.124 79.6)
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 #4B7FD3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.041
- Water Blue #0E87CC ΔE 0.041
- Dark Sky Blue #448EE4 ΔE 0.043
- Cool Blue #4984B8 ΔE 0.047
- Soft Blue #6488EA ΔE 0.051
- Steel Blue #4682B4 ΔE 0.051
- Off Blue #5684AE ΔE 0.063
- Faded Blue #658CBB ΔE 0.065
Use #4B7FD3 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.