#5576D1
Closest named color: Windows Blue (#3778BF). oklch(58.5% 0.144 266.9), rgb(85, 118, 209).
Aa
Black text reads best on this color (4.89:1).
About this color
#5576D1 is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.144 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.042 away. Black text reads best on it, at 4.89:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.144) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.89:1 |
| White text | 4.28:1 |
Values
| HEX | #5576D1 |
| RGB | rgb(85, 118, 209) |
| HSL | hsl(224, 57%, 58%) |
| OKLCH | oklch(58.5% 0.144 266.9) |
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 #5576D1 | 4.28:1 | AA large text | Lc -74.9 | Content text, not long reading |
| Black text on #5576D1 | 4.89:1 | AA | Lc 34.7 | Non-text elements, placeholder text |
| #5576D1 text on white | 4.28:1 | AA large text | Lc 69.4 | Content text, not long reading |
| #5576D1 text on black | 4.89:1 | AA | Lc -32.2 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CED9F2
oklch(88.5% 0.036 266.7)
-
Step 300
300
#AEC0EC
oklch(80.9% 0.066 267.5)
-
Step 400
400
#839EE2
oklch(70.6% 0.105 267.1)
-
Step 500
500
#6585DA
oklch(63.1% 0.133 267)
-
Step 600
600 (this color)
#5576D1
oklch(58.5% 0.144 266.9)
-
Step 700
700
#3E5BAC
oklch(49.2% 0.134 266.7)
-
Step 800
800
#334A8B
oklch(42.6% 0.111 267)
-
Step 900
900
#2D3F6F
oklch(37.8% 0.085 266.8)
-
Step 950
950
#1A2541
oklch(27% 0.055 266.6)
#5576D1 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) | #4D80D4 | 0.026 |
| Deuteranopia (no green cones) | #3B75CF | 0.027 |
| Tritanopia (no blue cones) | #008A99 | 0.126 |
| Achromatopsia (no color) | #7A7A7A | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5576D1
#5576D1
oklch(58.5% 0.144 266.9)
- #9A7600
#9A7600
oklch(58.5% 0.12 87.2)
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 #5576D1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.042
- Royal Blue #4169E1 ΔE 0.051
- Dark Periwinkle #665FD1 ΔE 0.059
- Soft Blue #6488EA ΔE 0.061
- Cool Blue #4984B8 ΔE 0.061
- Water Blue #0E87CC ΔE 0.061
- Steel Blue #4682B4 ΔE 0.063
- Cornflower #6A79F7 ΔE 0.064
Use #5576D1 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.