#4C79CB
Closest named color: Windows Blue (#3778BF). oklch(58.3% 0.136 261.4), rgb(76, 121, 203).
Aa
Black text reads best on this color (4.90:1).
About this color
#4C79CB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.136 and its hue 261°. 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 4.90:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.90:1 |
| White text | 4.28:1 |
Values
| HEX | #4C79CB |
| RGB | rgb(76, 121, 203) |
| HSL | hsl(219, 55%, 55%) |
| OKLCH | oklch(58.3% 0.136 261.4) |
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 #4C79CB | 4.28:1 | AA large text | Lc -74.9 | Content text, not long reading |
| Black text on #4C79CB | 4.90:1 | AA | Lc 34.7 | Non-text elements, placeholder text |
| #4C79CB text on white | 4.28:1 | AA large text | Lc 69.4 | Content text, not long reading |
| #4C79CB text on black | 4.90:1 | AA | Lc -32.3 | 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
#ABC2E9
oklch(81% 0.061 261)
-
Step 400
400
#7EA1DE
oklch(70.7% 0.098 261.2)
-
Step 500
500
#5E88D5
oklch(63.1% 0.126 261.7)
-
Step 600
600 (this color)
#4C79CB
oklch(58.3% 0.136 261.4)
-
Step 700
700
#365EA7
oklch(49.1% 0.126 261.4)
-
Step 800
800
#2D4D88
oklch(42.7% 0.105 261.6)
-
Step 900
900
#28416D
oklch(37.8% 0.082 261)
-
Step 950
950
#182640
oklch(27% 0.052 262)
#4C79CB 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) | #5581CE | 0.025 |
| Deuteranopia (no green cones) | #4275C9 | 0.016 |
| Tritanopia (no blue cones) | #008C98 | 0.115 |
| Achromatopsia (no color) | #7A7A7A | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4C79CB
#4C79CB
oklch(58.3% 0.136 261.4)
- #9F7200
#9F7200
oklch(58.2% 0.12 81.1)
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 #4C79CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.028
- Cool Blue #4984B8 ΔE 0.047
- Water Blue #0E87CC ΔE 0.048
- Steel Blue #4682B4 ΔE 0.049
- French Blue #436BAD ΔE 0.058
- Flat Blue #3C73A8 ΔE 0.059
- Royal Blue #4169E1 ΔE 0.059
- Nice Blue #107AB0 ΔE 0.061
Use #4C79CB 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.