#3594EF
Closest named color: Chefchaouen Blue (#4895EF). oklch(65.6% 0.161 251), rgb(53, 148, 239).
Aa
Black text reads best on this color (6.63:1).
About this color
#3594EF is a medium-light, vivid blue. In OKLCH its lightness is 66%, its chroma 0.161 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.014 away. Black text reads best on it, at 6.63:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.161) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 6.63:1 |
| White text | 3.16:1 |
Values
| HEX | #3594EF |
| RGB | rgb(53, 148, 239) |
| HSL | hsl(209, 85%, 57%) |
| OKLCH | oklch(65.6% 0.161 251) |
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 #3594EF | 3.16:1 | AA large text | Lc -63.8 | Content text, not long reading |
| Black text on #3594EF | 6.63:1 | AA | Lc 45.7 | Large or bold text, headings |
| #3594EF text on white | 3.16:1 | AA large text | Lc 58.3 | Large or bold text, headings |
| #3594EF text on black | 6.63:1 | AA | Lc -43.4 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DFEBF9
oklch(93.5% 0.023 252.2)
-
Step 200
200
#C4DCF6
oklch(88.5% 0.044 250.4)
-
Step 300
300
#9BC5F3
oklch(81% 0.079 251.1)
-
Step 400
400
#61A5EC
oklch(70.7% 0.126 250.9)
-
Step 500
500 (this color)
#3594EF
oklch(65.6% 0.161 251)
-
Step 600
600
#0075CD
oklch(55.6% 0.161 250.9)
-
Step 700
700
#0062AE
oklch(49.1% 0.143 251.1)
-
Step 800
800
#005090
oklch(42.7% 0.125 251.1)
-
Step 900
900
#064377
oklch(37.8% 0.105 250.9)
-
Step 950
950
#082746
oklch(26.9% 0.068 251.9)
#3594EF 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) | #699AF3 | 0.049 |
| Deuteranopia (no green cones) | #4B89ED | 0.030 |
| Tritanopia (no blue cones) | #00AAB6 | 0.120 |
| Achromatopsia (no color) | #919191 | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3594EF
#3594EF
oklch(65.6% 0.161 251)
- #C67F00
#C67F00
oklch(65.5% 0.141 70.6)
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 #3594EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.014
- Dark Sky Blue #448EE4 ΔE 0.021
- Dodger Blue #1E90FF ΔE 0.030
- Cornflower Blue #6495ED ΔE 0.039
- Soft Blue #6488EA ΔE 0.045
- Water Blue #0E87CC ΔE 0.064
- Clear Blue #247AFD ΔE 0.076
- Cornflower #6A79F7 ΔE 0.080
Use #3594EF 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.