#4D7DD3
Closest named color: Windows Blue (#3778BF). oklch(59.7% 0.142 261.2), rgb(77, 125, 211).
Aa
Black text reads best on this color (5.18:1).
About this color
#4D7DD3 is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.142 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 (0.142) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 5.18:1 |
| White text | 4.04:1 |
Values
| HEX | #4D7DD3 |
| RGB | rgb(77, 125, 211) |
| HSL | hsl(219, 60%, 56%) |
| OKLCH | oklch(59.7% 0.142 261.2) |
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 #4D7DD3 | 4.04:1 | AA large text | Lc -73.0 | Content text, not long reading |
| Black text on #4D7DD3 | 5.18:1 | AA | Lc 36.6 | Non-text elements, placeholder text |
| #4D7DD3 text on white | 4.04:1 | AA large text | Lc 67.5 | Content text, not long reading |
| #4D7DD3 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
#CBDAF3
oklch(88.5% 0.038 260.7)
-
Step 300
300
#A8C2EE
oklch(81% 0.069 260.9)
-
Step 400
400
#79A1E6
oklch(70.8% 0.111 260.9)
-
Step 500
500 (this color)
#4D7DD3
oklch(59.7% 0.142 261.2)
-
Step 600
600
#3C6FCC
oklch(55.5% 0.154 261.3)
-
Step 700
700
#2E5DB1
oklch(49.2% 0.143 261)
-
Step 800
800
#274C8F
oklch(42.7% 0.119 261.2)
-
Step 900
900
#244072
oklch(37.7% 0.092 261.1)
-
Step 950
950
#162643
oklch(27.1% 0.058 261.5)
#4D7DD3 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) | #5685D6 | 0.025 |
| Deuteranopia (no green cones) | #4279D1 | 0.016 |
| Tritanopia (no blue cones) | #00919E | 0.118 |
| Achromatopsia (no color) | #7E7E7E | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4D7DD3
#4D7DD3
oklch(59.7% 0.142 261.2)
- #A47600
#A47600
oklch(59.6% 0.123 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 #4D7DD3, 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 0.045
- Dark Sky Blue #448EE4 ΔE 0.048
- Cool Blue #4984B8 ΔE 0.050
- Soft Blue #6488EA ΔE 0.052
- Steel Blue #4682B4 ΔE 0.054
- Royal Blue #4169E1 ΔE 0.061
- Off Blue #5684AE ΔE 0.065
Use #4D7DD3 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.