#487CD0
Closest named color: Windows Blue (#3778BF). oklch(59.1% 0.141 259.6), rgb(72, 124, 208).
Aa
Black text reads best on this color (5.06:1).
About this color
#487CD0 is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.141 and its hue 260°. 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 5.06:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.141) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 5.06:1 |
| White text | 4.14:1 |
Values
| HEX | #487CD0 |
| RGB | rgb(72, 124, 208) |
| HSL | hsl(217, 59%, 55%) |
| OKLCH | oklch(59.1% 0.141 259.6) |
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 #487CD0 | 4.14:1 | AA large text | Lc -73.7 | Content text, not long reading |
| Black text on #487CD0 | 5.06:1 | AA | Lc 35.8 | Non-text elements, placeholder text |
| #487CD0 text on white | 4.14:1 | AA large text | Lc 68.2 | Content text, not long reading |
| #487CD0 text on black | 5.06:1 | AA | Lc -33.4 | 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
#CCDAF1
oklch(88.5% 0.035 260.4)
-
Step 300
300
#A9C2EA
oklch(80.9% 0.063 259.7)
-
Step 400
400
#7BA2E0
oklch(70.8% 0.101 259.4)
-
Step 500
500
#5989D7
oklch(63.1% 0.129 259.7)
-
Step 600
600 (this color)
#487CD0
oklch(59.1% 0.141 259.6)
-
Step 700
700
#305FAA
oklch(49.2% 0.131 259.4)
-
Step 800
800
#284E89
oklch(42.8% 0.107 258.9)
-
Step 900
900
#25416E
oklch(37.7% 0.085 259.5)
-
Step 950
950
#162640
oklch(26.9% 0.053 259.7)
#487CD0 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) | #5683D3 | 0.026 |
| Deuteranopia (no green cones) | #4177CE | 0.016 |
| Tritanopia (no blue cones) | #008F9C | 0.114 |
| Achromatopsia (no color) | #7D7D7D | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #487CD0
#487CD0
oklch(59.1% 0.141 259.6)
- #A47300
#A47300
oklch(59% 0.123 79)
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 #487CD0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.033
- Water Blue #0E87CC ΔE 0.042
- Cool Blue #4984B8 ΔE 0.048
- Steel Blue #4682B4 ΔE 0.050
- Dark Sky Blue #448EE4 ΔE 0.052
- Soft Blue #6488EA ΔE 0.059
- Royal Blue #4169E1 ΔE 0.060
- Off Blue #5684AE ΔE 0.064
Use #487CD0 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.