#4B7DD4
Closest named color: Windows Blue (#3778BF). oklch(59.7% 0.144 260.7), rgb(75, 125, 212).
Aa
Black text reads best on this color (5.18:1).
About this color
#4B7DD4 is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.144 and its hue 261°. 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 5.18:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.144) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 5.18:1 |
| White text | 4.05:1 |
Values
| HEX | #4B7DD4 |
| RGB | rgb(75, 125, 212) |
| HSL | hsl(218, 61%, 56%) |
| OKLCH | oklch(59.7% 0.144 260.7) |
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 #4B7DD4 | 4.05:1 | AA large text | Lc -73.0 | Content text, not long reading |
| Black text on #4B7DD4 | 5.18:1 | AA | Lc 36.6 | Non-text elements, placeholder text |
| #4B7DD4 text on white | 4.05:1 | AA large text | Lc 67.5 | Content text, not long reading |
| #4B7DD4 text on black | 5.18:1 | AA | Lc -34.2 | 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
#CBDAF4
oklch(88.5% 0.039 261.5)
-
Step 300
300
#A7C2EF
oklch(81% 0.07 260.6)
-
Step 400
400
#78A1E7
oklch(70.8% 0.113 260.7)
-
Step 500
500 (this color)
#4B7DD4
oklch(59.7% 0.144 260.7)
-
Step 600
600
#3A6FCD
oklch(55.5% 0.156 260.9)
-
Step 700
700
#2C5DB2
oklch(49.2% 0.145 260.6)
-
Step 800
800
#254C90
oklch(42.7% 0.121 260.6)
-
Step 900
900
#234073
oklch(37.7% 0.094 260.8)
-
Step 950
950
#152643
oklch(27% 0.059 260.5)
#4B7DD4 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) | #5585D7 | 0.025 |
| Deuteranopia (no green cones) | #4178D2 | 0.018 |
| Tritanopia (no blue cones) | #00919E | 0.119 |
| Achromatopsia (no color) | #7E7E7E | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B7DD4
#4B7DD4
oklch(59.7% 0.144 260.7)
- #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 #4B7DD4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.040
- Water Blue #0E87CC ΔE 0.044
- Dark Sky Blue #448EE4 ΔE 0.047
- Cool Blue #4984B8 ΔE 0.051
- Soft Blue #6488EA ΔE 0.052
- Steel Blue #4682B4 ΔE 0.055
- Royal Blue #4169E1 ΔE 0.060
- Cornflower #6A79F7 ΔE 0.066
Use #4B7DD4 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.