#3576D7
Closest named color: Royal Blue (#4169E1). oklch(57.5% 0.163 258.5), rgb(53, 118, 215).
Aa
Black text reads best on this color (4.72:1).
About this color
#3576D7 is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.163 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.038 away. Black text reads best on it, at 4.72:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.163) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.72:1 |
| White text | 4.44:1 |
Values
| HEX | #3576D7 |
| RGB | rgb(53, 118, 215) |
| HSL | hsl(216, 67%, 53%) |
| OKLCH | oklch(57.5% 0.163 258.5) |
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 #3576D7 | 4.44:1 | AA large text | Lc -75.9 | Fine for body text |
| Black text on #3576D7 | 4.72:1 | AA | Lc 33.7 | Non-text elements, placeholder text |
| #3576D7 text on white | 4.44:1 | AA large text | Lc 70.4 | Content text, not long reading |
| #3576D7 text on black | 4.72:1 | 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
#C9DAF5
oklch(88.4% 0.042 259.6)
-
Step 300
300
#A4C2F0
oklch(80.8% 0.073 258.8)
-
Step 400
400
#72A2E9
oklch(70.7% 0.117 258)
-
Step 500
500
#4D88E3
oklch(63% 0.151 258.8)
-
Step 600
600 (this color)
#3576D7
oklch(57.5% 0.163 258.5)
-
Step 700
700
#225DB5
oklch(49.1% 0.152 258.7)
-
Step 800
800
#1E4D92
oklch(42.8% 0.125 258.4)
-
Step 900
900
#1E4175
oklch(37.9% 0.098 258.3)
-
Step 950
950
#122644
oklch(26.9% 0.062 258.3)
#3576D7 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) | #437FDB | 0.029 |
| Deuteranopia (no green cones) | #2071D5 | 0.021 |
| Tritanopia (no blue cones) | #008D9C | 0.127 |
| Achromatopsia (no color) | #787878 | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3576D7
#3576D7
oklch(57.5% 0.163 258.5)
- #9F6F00
#9F6F00
oklch(57.6% 0.12 78.7)
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 #3576D7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.038
- Windows Blue #3778BF ΔE 0.039
- Cerulean Blue #056EEE ΔE 0.048
- Water Blue #0E87CC ΔE 0.053
- Clear Blue #247AFD ΔE 0.057
- Mid Blue #276AB3 ΔE 0.064
- Neon Blue #4361EE ΔE 0.064
- French Blue #436BAD ΔE 0.067
Use #3576D7 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.