#487DC9
Closest named color: Windows Blue (#3778BF). oklch(58.9% 0.13 257.5), rgb(72, 125, 201).
Aa
Black text reads best on this color (5.05:1).
About this color
#487DC9 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, 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 0.026 away. Black text reads best on it, at 5.05:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 5.05:1 |
| White text | 4.15:1 |
Values
| HEX | #487DC9 |
| RGB | rgb(72, 125, 201) |
| HSL | hsl(215, 54%, 54%) |
| OKLCH | oklch(58.9% 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 #487DC9 | 4.15:1 | AA large text | Lc -73.9 | Content text, not long reading |
| Black text on #487DC9 | 5.05:1 | AA | Lc 35.7 | Non-text elements, placeholder text |
| #487DC9 text on white | 4.15:1 | AA large text | Lc 68.4 | Content text, not long reading |
| #487DC9 text on black | 5.05:1 | AA | Lc -33.3 | 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
#E3EAF5
oklch(93.5% 0.017 259.4)
-
Step 200
200
#CCDAEF
oklch(88.4% 0.033 258.4)
-
Step 300
300
#A9C2E7
oklch(80.8% 0.059 258.1)
-
Step 400
400
#7BA2DB
oklch(70.6% 0.094 257.8)
-
Step 500
500
#598AD1
oklch(63% 0.12 257.6)
-
Step 600
600 (this color)
#487DC9
oklch(58.9% 0.13 257.5)
-
Step 700
700
#3060A4
oklch(49.1% 0.121 257.5)
-
Step 800
800
#294F85
oklch(42.8% 0.1 257.4)
-
Step 900
900
#25426A
oklch(37.7% 0.077 256.8)
-
Step 950
950
#16273E
oklch(27% 0.049 256.3)
#487DC9 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) | #5C83CC | 0.029 |
| Deuteranopia (no green cones) | #4977C7 | 0.016 |
| Tritanopia (no blue cones) | #008E99 | 0.107 |
| Achromatopsia (no color) | #7C7C7C | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #487DC9
#487DC9
oklch(58.9% 0.13 257.5)
- #A57200
#A57200
oklch(59% 0.123 77.6)
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 #487DC9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.026
- Cool Blue #4984B8 ΔE 0.037
- Water Blue #0E87CC ΔE 0.038
- Steel Blue #4682B4 ΔE 0.039
- Off Blue #5684AE ΔE 0.052
- Dark Sky Blue #448EE4 ΔE 0.056
- Nice Blue #107AB0 ΔE 0.056
- Flat Blue #3C73A8 ΔE 0.057
Use #487DC9 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.