#3584C2
Closest named color: Water Blue (#0E87CC). oklch(59.4% 0.122 245.8), rgb(53, 132, 194).
Aa
Black text reads best on this color (5.23:1).
About this color
#3584C2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.122 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.021 away. Black text reads best on it, at 5.23:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.122) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.23:1 |
| White text | 4.01:1 |
Values
| HEX | #3584C2 |
| RGB | rgb(53, 132, 194) |
| HSL | hsl(206, 57%, 48%) |
| OKLCH | oklch(59.4% 0.122 245.8) |
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 #3584C2 | 4.01:1 | AA large text | Lc -72.6 | Content text, not long reading |
| Black text on #3584C2 | 5.23:1 | AA | Lc 37.0 | Non-text elements, placeholder text |
| #3584C2 text on white | 4.01:1 | AA large text | Lc 67.1 | Content text, not long reading |
| #3584C2 text on black | 5.23:1 | AA | Lc -34.5 | 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 500.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C8DCEE
oklch(88.5% 0.033 245.3)
-
Step 300
300
#A1C5E5
oklch(80.8% 0.06 245.5)
-
Step 400
400
#6DA7D9
oklch(70.8% 0.095 245.7)
-
Step 500
500 (this color)
#3584C2
oklch(59.4% 0.122 245.8)
-
Step 600
600
#1979BB
oklch(55.7% 0.132 245.3)
-
Step 700
700
#0665A2
oklch(49.1% 0.124 246)
-
Step 800
800
#0E5383
oklch(42.8% 0.102 245.6)
-
Step 900
900
#164569
oklch(37.8% 0.079 245.5)
-
Step 950
950
#0F283D
oklch(26.8% 0.05 246.5)
#3584C2 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) | #6886C5 | 0.051 |
| Deuteranopia (no green cones) | #5479C1 | 0.037 |
| Tritanopia (no blue cones) | #00939A | 0.088 |
| Achromatopsia (no color) | #7F7F7F | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3584C2
#3584C2
oklch(59.4% 0.122 245.8)
- #AF6D1C
#AF6D1C
oklch(59.4% 0.122 65.5)
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 #3584C2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.021
- Cool Blue #4984B8 ΔE 0.021
- Steel Blue #4682B4 ΔE 0.023
- Windows Blue #3778BF ΔE 0.033
- Blue NCS #118AB2 ΔE 0.038
- Off Blue #5684AE ΔE 0.040
- Nice Blue #107AB0 ΔE 0.044
- Dusty Blue #5A86AD ΔE 0.046
Use #3584C2 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.