#4B80CC
Closest named color: Windows Blue (#3778BF). oklch(59.9% 0.13 257.5), rgb(75, 128, 204).
Aa
Black text reads best on this color (5.25:1).
About this color
#4B80CC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.130 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.035 away. Black text reads best on it, at 5.25:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 5.25:1 |
| White text | 3.99:1 |
Values
| HEX | #4B80CC |
| RGB | rgb(75, 128, 204) |
| HSL | hsl(215, 56%, 55%) |
| OKLCH | oklch(59.9% 0.13 257.5) |
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 #4B80CC | 3.99:1 | AA large text | Lc -72.5 | Content text, not long reading |
| Black text on #4B80CC | 5.25:1 | AA | Lc 37.1 | Non-text elements, placeholder text |
| #4B80CC text on white | 3.99:1 | AA large text | Lc 67.0 | Content text, not long reading |
| #4B80CC text on black | 5.25:1 | AA | Lc -34.6 | 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 500.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF6
oklch(93.7% 0.018 253.3)
-
Step 200
200
#CBDAF1
oklch(88.4% 0.036 258.9)
-
Step 300
300
#A7C3EA
oklch(81% 0.063 256.7)
-
Step 400
400
#78A2E0
oklch(70.7% 0.102 258)
-
Step 500
500 (this color)
#4B80CC
oklch(59.9% 0.13 257.5)
-
Step 600
600
#3972C4
oklch(55.5% 0.141 257.8)
-
Step 700
700
#2B5FA9
oklch(49% 0.131 257.7)
-
Step 800
800
#254E89
oklch(42.6% 0.108 257.8)
-
Step 900
900
#23426E
oklch(37.9% 0.084 257.4)
-
Step 950
950
#152740
oklch(27.1% 0.053 256.9)
#4B80CC 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) | #5F86CF | 0.029 |
| Deuteranopia (no green cones) | #4D7ACA | 0.016 |
| Tritanopia (no blue cones) | #00919C | 0.107 |
| Achromatopsia (no color) | #7F7F7F | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B80CC
#4B80CC
oklch(59.9% 0.13 257.5)
- #A97400
#A97400
oklch(59.8% 0.125 77)
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 #4B80CC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.035
- Cool Blue #4984B8 ΔE 0.036
- Water Blue #0E87CC ΔE 0.036
- Steel Blue #4682B4 ΔE 0.040
- Dark Sky Blue #448EE4 ΔE 0.047
- Off Blue #5684AE ΔE 0.051
- Faded Blue #658CBB ΔE 0.056
- Dusty Blue #5A86AD ΔE 0.057
Use #4B80CC 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.