#4B72C3
Closest named color: Windows Blue (#3778BF). oklch(56.3% 0.133 263.4), rgb(75, 114, 195).
Aa
White text reads best on this color (4.67:1).
About this color
#4B72C3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.133 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.025 away. White text reads best on it, at 4.67:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.49:1 |
| White text | 4.67:1 |
Values
| HEX | #4B72C3 |
| RGB | rgb(75, 114, 195) |
| HSL | hsl(220, 50%, 53%) |
| OKLCH | oklch(56.3% 0.133 263.4) |
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 #4B72C3 | 4.67:1 | AA | Lc -77.7 | Fine for body text |
| Black text on #4B72C3 | 4.49:1 | AA large text | Lc 31.8 | Non-text elements, placeholder text |
| #4B72C3 text on white | 4.67:1 | AA | Lc 72.2 | Content text, not long reading |
| #4B72C3 text on black | 4.49:1 | AA large text | Lc -29.4 | Dividers and decoration only |
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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF6
oklch(93.6% 0.017 264.5)
-
Step 200
200
#CEDAF0
oklch(88.6% 0.033 262.7)
-
Step 300
300
#ADC1E8
oklch(80.9% 0.06 263.7)
-
Step 400
400
#81A0DD
oklch(70.6% 0.096 263.4)
-
Step 500
500
#6288D4
oklch(63.2% 0.123 263.2)
-
Step 600
600 (this color)
#4B72C3
oklch(56.3% 0.133 263.4)
-
Step 700
700
#3A5DA6
oklch(49% 0.124 263.3)
-
Step 800
800
#314D87
oklch(42.9% 0.102 263.3)
-
Step 900
900
#2B406C
oklch(37.7% 0.08 263.7)
-
Step 950
950
#19263F
oklch(27% 0.05 262.6)
#4B72C3 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) | #4E7AC6 | 0.022 |
| Deuteranopia (no green cones) | #3D6FC1 | 0.018 |
| Tritanopia (no blue cones) | #008491 | 0.113 |
| Achromatopsia (no color) | #747474 | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B72C3
#4B72C3
oklch(56.3% 0.133 263.4)
- #966E00
#966E00
oklch(56.4% 0.116 83.3)
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 #4B72C3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.025
- French Blue #436BAD ΔE 0.039
- Flat Blue #3C73A8 ΔE 0.047
- Mid Blue #276AB3 ΔE 0.049
- Steel Blue #4682B4 ΔE 0.055
- Royal Blue #4169E1 ΔE 0.056
- Nice Blue #107AB0 ΔE 0.056
- Cool Blue #4984B8 ΔE 0.057
Use #4B72C3 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.