#4A7ACC
Closest named color: Windows Blue (#3778BF). oklch(58.5% 0.137 260.4), rgb(74, 122, 204).
Aa
Black text reads best on this color (4.94:1).
About this color
#4A7ACC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.137 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.028 away. Black text reads best on it, at 4.94:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.137) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.94:1 |
| White text | 4.24:1 |
Values
| HEX | #4A7ACC |
| RGB | rgb(74, 122, 204) |
| HSL | hsl(218, 56%, 55%) |
| OKLCH | oklch(58.5% 0.137 260.4) |
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 #4A7ACC | 4.24:1 | AA large text | Lc -74.6 | Content text, not long reading |
| Black text on #4A7ACC | 4.94:1 | AA | Lc 35.0 | Non-text elements, placeholder text |
| #4A7ACC text on white | 4.24:1 | AA large text | Lc 69.1 | Content text, not long reading |
| #4A7ACC text on black | 4.94:1 | AA | Lc -32.6 | 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
#CCDAF0
oklch(88.5% 0.034 259.4)
-
Step 300
300
#AAC2E9
oklch(80.9% 0.061 260.1)
-
Step 400
400
#7DA1DE
oklch(70.6% 0.098 260.7)
-
Step 500
500
#5C89D5
oklch(63.2% 0.125 260.4)
-
Step 600
600 (this color)
#4A7ACC
oklch(58.5% 0.137 260.4)
-
Step 700
700
#345EA8
oklch(49% 0.128 260.8)
-
Step 800
800
#2B4D88
oklch(42.6% 0.106 260.6)
-
Step 900
900
#27416D
oklch(37.8% 0.082 260.3)
-
Step 950
950
#172640
oklch(27% 0.053 260.8)
#4A7ACC 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) | #5581CF | 0.024 |
| Deuteranopia (no green cones) | #4275CA | 0.017 |
| Tritanopia (no blue cones) | #008D99 | 0.114 |
| Achromatopsia (no color) | #7B7B7B | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4A7ACC
#4A7ACC
oklch(58.5% 0.137 260.4)
- #A17200
#A17200
oklch(58.5% 0.121 79.9)
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 #4A7ACC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.028
- Water Blue #0E87CC ΔE 0.045
- Cool Blue #4984B8 ΔE 0.046
- Steel Blue #4682B4 ΔE 0.048
- Dark Sky Blue #448EE4 ΔE 0.059
- French Blue #436BAD ΔE 0.060
- Flat Blue #3C73A8 ΔE 0.060
- Royal Blue #4169E1 ΔE 0.060
Use #4A7ACC 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.