#487BB8
Closest named color: Windows Blue (#3778BF). oklch(57.5% 0.11 253.9), rgb(72, 123, 184).
Aa
Black text reads best on this color (4.80:1).
About this color
#487BB8 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.110 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.022 away. Black text reads best on it, at 4.80:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.80:1 |
| White text | 4.37:1 |
Values
| HEX | #487BB8 |
| RGB | rgb(72, 123, 184) |
| HSL | hsl(213, 44%, 50%) |
| OKLCH | oklch(57.5% 0.11 253.9) |
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 #487BB8 | 4.37:1 | AA large text | Lc -75.6 | Fine for body text |
| Black text on #487BB8 | 4.80:1 | AA | Lc 34.0 | Non-text elements, placeholder text |
| #487BB8 text on white | 4.37:1 | AA large text | Lc 70.1 | Content text, not long reading |
| #487BB8 text on black | 4.80:1 | AA | Lc -31.5 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CDDBEB
oklch(88.6% 0.027 251.7)
-
Step 300
300
#ABC3E1
oklch(80.9% 0.05 254.1)
-
Step 400
400
#7EA4D1
oklch(70.8% 0.078 253.1)
-
Step 500
500
#5D8CC5
oklch(63.1% 0.101 253.9)
-
Step 600
600 (this color)
#487BB8
oklch(57.5% 0.11 253.9)
-
Step 700
700
#346299
oklch(49% 0.102 254.1)
-
Step 800
800
#2C507C
oklch(42.6% 0.085 254.4)
-
Step 900
900
#284364
oklch(37.8% 0.066 254.2)
-
Step 950
950
#18273A
oklch(26.9% 0.041 254.8)
#487BB8 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) | #617FBB | 0.032 |
| Deuteranopia (no green cones) | #5274B7 | 0.021 |
| Tritanopia (no blue cones) | #008991 | 0.091 |
| Achromatopsia (no color) | #797979 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #487BB8
#487BB8
oklch(57.5% 0.11 253.9)
- #9F6E1F
#9F6E1F
oklch(57.6% 0.11 74.3)
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 #487BB8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.022
- Steel Blue #4682B4 ΔE 0.022
- Cool Blue #4984B8 ΔE 0.026
- Flat Blue #3C73A8 ΔE 0.035
- Off Blue #5684AE ΔE 0.038
- Nice Blue #107AB0 ΔE 0.039
- Cerulean #457B9D ΔE 0.043
- Dull Blue #49759C ΔE 0.044
Use #487BB8 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.