#4B79CF
Closest named color: Windows Blue (#3778BF). oklch(58.5% 0.142 261.8), rgb(75, 121, 207).
Aa
Black text reads best on this color (4.93:1).
About this color
#4B79CF is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.142 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.032 away. Black text reads best on it, at 4.93:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.142) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.93:1 |
| White text | 4.25:1 |
Values
| HEX | #4B79CF |
| RGB | rgb(75, 121, 207) |
| HSL | hsl(219, 58%, 55%) |
| OKLCH | oklch(58.5% 0.142 261.8) |
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 #4B79CF | 4.25:1 | AA large text | Lc -74.6 | Content text, not long reading |
| Black text on #4B79CF | 4.93:1 | AA | Lc 34.9 | Non-text elements, placeholder text |
| #4B79CF text on white | 4.25:1 | AA large text | Lc 69.2 | Content text, not long reading |
| #4B79CF text on black | 4.93:1 | AA | Lc -32.5 | 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
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CCDAF1
oklch(88.5% 0.035 260.4)
-
Step 300
300
#AAC1EB
oklch(80.8% 0.065 262.4)
-
Step 400
400
#7DA1E0
oklch(70.7% 0.101 261.2)
-
Step 500
500
#5C88D8
oklch(63.1% 0.131 261.6)
-
Step 600
600 (this color)
#4B79CF
oklch(58.5% 0.142 261.8)
-
Step 700
700
#355DAA
oklch(49% 0.131 262.1)
-
Step 800
800
#2C4D8A
oklch(42.8% 0.109 261.6)
-
Step 900
900
#28406E
oklch(37.6% 0.085 262.3)
-
Step 950
950
#172641
oklch(27% 0.055 261.4)
#4B79CF 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) | #5281D2 | 0.024 |
| Deuteranopia (no green cones) | #3E75CD | 0.018 |
| Tritanopia (no blue cones) | #008D9A | 0.119 |
| Achromatopsia (no color) | #7B7B7B | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B79CF
#4B79CF
oklch(58.5% 0.142 261.8)
- #9F7300
#9F7300
oklch(58.4% 0.12 81.8)
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 #4B79CF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.032
- Water Blue #0E87CC ΔE 0.048
- Cool Blue #4984B8 ΔE 0.052
- Steel Blue #4682B4 ΔE 0.054
- Royal Blue #4169E1 ΔE 0.055
- Dark Sky Blue #448EE4 ΔE 0.059
- French Blue #436BAD ΔE 0.062
- Soft Blue #6488EA ΔE 0.063
Use #4B79CF 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.