#3594D3
Closest named color: Dark Sky Blue (#448EE4). oklch(64% 0.129 242.1), rgb(53, 148, 211).
Aa
Black text reads best on this color (6.32:1).
About this color
#3594D3 is a medium-light, moderately saturated blue. In OKLCH its lightness is 64%, its chroma 0.129 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.035 away. Black text reads best on it, at 6.32:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.32:1 |
| White text | 3.31:1 |
Values
| HEX | #3594D3 |
| RGB | rgb(53, 148, 211) |
| HSL | hsl(204, 64%, 52%) |
| OKLCH | oklch(64% 0.129 242.1) |
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 #3594D3 | 3.31:1 | AA large text | Lc -65.7 | Content text, not long reading |
| Black text on #3594D3 | 6.32:1 | AA | Lc 43.8 | Non-text elements, placeholder text |
| #3594D3 text on white | 3.31:1 | AA large text | Lc 60.2 | Content text, not long reading |
| #3594D3 text on black | 6.32:1 | AA | Lc -41.5 | 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
#E0ECF5
oklch(93.7% 0.018 240)
-
Step 200
200
#C6DDEF
oklch(88.6% 0.035 241.5)
-
Step 300
300
#9DC6E6
oklch(80.8% 0.063 242)
-
Step 400
400
#65A8DA
oklch(70.7% 0.1 242.3)
-
Step 500
500 (this color)
#3594D3
oklch(64% 0.129 242.1)
-
Step 600
600
#007AB9
oklch(55.5% 0.132 242.1)
-
Step 700
700
#00679D
oklch(49.2% 0.117 242)
-
Step 800
800
#005481
oklch(42.7% 0.101 241.9)
-
Step 900
900
#0A466A
oklch(37.8% 0.084 241.9)
-
Step 950
950
#0A293E
oklch(27% 0.053 242.3)
#3594D3 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) | #7795D6 | 0.062 |
| Deuteranopia (no green cones) | #6186D2 | 0.049 |
| Tritanopia (no blue cones) | #00A4AA | 0.090 |
| Achromatopsia (no color) | #8D8D8D | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3594D3
#3594D3
oklch(64% 0.129 242.1)
- #C3782B
#C3782B
oklch(64% 0.129 61.9)
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 #3594D3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.035
- Water Blue #0E87CC ΔE 0.043
- Chefchaouen Blue #4895EF ΔE 0.046
- Faded Blue #658CBB ΔE 0.050
- Cool Blue #4984B8 ΔE 0.053
- Cornflower Blue #6495ED ΔE 0.058
- Blue NCS #118AB2 ΔE 0.058
- Steel Blue #4682B4 ΔE 0.060
Use #3594D3 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.