#487CBB
Closest named color: Windows Blue (#3778BF). oklch(57.9% 0.113 254.2), rgb(72, 124, 187).
Aa
Black text reads best on this color (4.87:1).
About this color
#487CBB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.113 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 4.87:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.113) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.87:1 |
| White text | 4.30:1 |
Values
| HEX | #487CBB |
| RGB | rgb(72, 124, 187) |
| HSL | hsl(213, 46%, 51%) |
| OKLCH | oklch(57.9% 0.113 254.2) |
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 #487CBB | 4.30:1 | AA large text | Lc -75.1 | Fine for body text |
| Black text on #487CBB | 4.87:1 | AA | Lc 34.5 | Non-text elements, placeholder text |
| #487CBB text on white | 4.30:1 | AA large text | Lc 69.6 | Content text, not long reading |
| #487CBB text on black | 4.87:1 | AA | Lc -32.1 | 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
#E3EBF4
oklch(93.7% 0.015 251.2)
-
Step 200
200
#CDDBEC
oklch(88.6% 0.028 253.2)
-
Step 300
300
#ABC3E1
oklch(80.9% 0.05 254.1)
-
Step 400
400
#7EA3D3
oklch(70.6% 0.082 255.2)
-
Step 500
500
#5C8CC7
oklch(63.1% 0.104 254.3)
-
Step 600
600 (this color)
#487CBB
oklch(57.9% 0.113 254.2)
-
Step 700
700
#33629B
oklch(49.1% 0.105 254.5)
-
Step 800
800
#2B507D
oklch(42.6% 0.087 254.4)
-
Step 900
900
#274365
oklch(37.8% 0.068 254.1)
-
Step 950
950
#17273B
oklch(26.9% 0.043 254.6)
#487CBB 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) | #6180BE | 0.031 |
| Deuteranopia (no green cones) | #5275BA | 0.020 |
| Tritanopia (no blue cones) | #008A93 | 0.092 |
| Achromatopsia (no color) | #7A7A7A | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #487CBB
#487CBB
oklch(57.9% 0.113 254.2)
- #A16F1C
#A16F1C
oklch(58% 0.112 74.5)
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 #487CBB, 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 0.025
- Off Blue #5684AE ΔE 0.038
- Flat Blue #3C73A8 ΔE 0.039
- Nice Blue #107AB0 ΔE 0.042
- Water Blue #0E87CC ΔE 0.043
- Dusty Blue #5A86AD ΔE 0.045
Use #487CBB 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.