#4F7ACD
Closest named color: Windows Blue (#3778BF). oklch(58.8% 0.136 262.3), rgb(79, 122, 205).
Aa
Black text reads best on this color (4.99:1).
About this color
#4F7ACD is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.136 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.033 away. Black text reads best on it, at 4.99:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.99:1 |
| White text | 4.20:1 |
Values
| HEX | #4F7ACD |
| RGB | rgb(79, 122, 205) |
| HSL | hsl(220, 56%, 56%) |
| OKLCH | oklch(58.8% 0.136 262.3) |
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 #4F7ACD | 4.20:1 | AA large text | Lc -74.3 | Content text, not long reading |
| Black text on #4F7ACD | 4.99:1 | AA | Lc 35.3 | Non-text elements, placeholder text |
| #4F7ACD text on white | 4.20:1 | AA large text | Lc 68.8 | Content text, not long reading |
| #4F7ACD text on black | 4.99:1 | AA | Lc -32.9 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CDDAF0
oklch(88.5% 0.033 261)
-
Step 300
300
#ABC1E9
oklch(80.8% 0.062 262.3)
-
Step 400
400
#7FA1DE
oklch(70.8% 0.098 261.7)
-
Step 500
500
#5F88D5
oklch(63.1% 0.125 262.1)
-
Step 600
600 (this color)
#4F7ACD
oklch(58.8% 0.136 262.3)
-
Step 700
700
#385EA8
oklch(49.2% 0.126 262.3)
-
Step 800
800
#2E4D88
oklch(42.8% 0.105 262)
-
Step 900
900
#29406D
oklch(37.6% 0.083 262.6)
-
Step 950
950
#182640
oklch(27% 0.052 262)
#4F7ACD 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) | #5582D0 | 0.023 |
| Deuteranopia (no green cones) | #4476CB | 0.017 |
| Tritanopia (no blue cones) | #008D99 | 0.117 |
| Achromatopsia (no color) | #7C7C7C | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F7ACD
#4F7ACD
oklch(58.8% 0.136 262.3)
- #A07400
#A07400
oklch(58.8% 0.121 82)
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 #4F7ACD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.033
- Cool Blue #4984B8 ΔE 0.048
- Water Blue #0E87CC ΔE 0.048
- Steel Blue #4682B4 ΔE 0.050
- Dark Sky Blue #448EE4 ΔE 0.058
- Royal Blue #4169E1 ΔE 0.060
- Soft Blue #6488EA ΔE 0.061
- Off Blue #5684AE ΔE 0.062
Use #4F7ACD 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.