#3576D6
Closest named color: Windows Blue (#3778BF). oklch(57.4% 0.162 258.4), rgb(53, 118, 214).
Aa
Black text reads best on this color (4.71:1).
About this color
#3576D6 is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.162 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.037 away. Black text reads best on it, at 4.71:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.162) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.71:1 |
| White text | 4.45:1 |
Values
| HEX | #3576D6 |
| RGB | rgb(53, 118, 214) |
| HSL | hsl(216, 66%, 52%) |
| OKLCH | oklch(57.4% 0.162 258.4) |
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 #3576D6 | 4.45:1 | AA large text | Lc -76.0 | Fine for body text |
| Black text on #3576D6 | 4.71:1 | AA | Lc 33.6 | Non-text elements, placeholder text |
| #3576D6 text on white | 4.45:1 | AA large text | Lc 70.5 | Content text, not long reading |
| #3576D6 text on black | 4.71:1 | AA | Lc -31.2 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF8
oklch(93.6% 0.021 254.9)
-
Step 200
200
#C9DAF4
oklch(88.4% 0.04 258.8)
-
Step 300
300
#A4C2F0
oklch(80.8% 0.073 258.8)
-
Step 400
400
#73A2E9
oklch(70.8% 0.116 258.4)
-
Step 500
500
#4D89E2
oklch(63.2% 0.148 258.2)
-
Step 600
600 (this color)
#3576D6
oklch(57.4% 0.162 258.4)
-
Step 700
700
#225EB4
oklch(49.2% 0.15 258.2)
-
Step 800
800
#1E4D92
oklch(42.8% 0.125 258.4)
-
Step 900
900
#1E4174
oklch(37.8% 0.096 258)
-
Step 950
950
#122644
oklch(26.9% 0.062 258.3)
#3576D6 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) | #447FDA | 0.029 |
| Deuteranopia (no green cones) | #2271D4 | 0.020 |
| Tritanopia (no blue cones) | #008D9B | 0.127 |
| Achromatopsia (no color) | #777777 | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3576D6
#3576D6
oklch(57.4% 0.162 258.4)
- #9E6E00
#9E6E00
oklch(57.3% 0.119 78.4)
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 #3576D6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.037
- Royal Blue #4169E1 ΔE 0.039
- Cerulean Blue #056EEE ΔE 0.049
- Water Blue #0E87CC ΔE 0.052
- Clear Blue #247AFD ΔE 0.059
- Mid Blue #276AB3 ΔE 0.062
- French Blue #436BAD ΔE 0.065
- Neon Blue #4361EE ΔE 0.065
Use #3576D6 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.