#3565CA
Closest named color: Royal Blue (#4169E1). oklch(53% 0.166 262.9), rgb(53, 101, 202).
Aa
White text reads best on this color (5.43:1).
About this color
#3565CA is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.166 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.039 away. White text reads best on it, at 5.43:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.166) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 3.86:1 |
| White text | 5.43:1 |
Values
| HEX | #3565CA |
| RGB | rgb(53, 101, 202) |
| HSL | hsl(221, 58%, 50%) |
| OKLCH | oklch(53% 0.166 262.9) |
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 #3565CA | 5.43:1 | AA | Lc -82.0 | Fine for body text |
| Black text on #3565CA | 3.86:1 | AA large text | Lc 27.4 | Dividers and decoration only |
| #3565CA text on white | 5.43:1 | AA | Lc 76.7 | Fine for body text |
| #3565CA text on black | 3.86:1 | AA large text | Lc -25.1 | Dividers and decoration only |
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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF9
oklch(93.5% 0.022 263.2)
-
Step 200
200
#CBDAF5
oklch(88.6% 0.041 262.3)
-
Step 300
300
#A7C1F2
oklch(80.9% 0.075 262.9)
-
Step 400
400
#79A0EB
oklch(70.8% 0.119 262.7)
-
Step 500
500
#5786E5
oklch(63.2% 0.152 262.9)
-
Step 600
600 (this color)
#3565CA
oklch(53% 0.166 262.9)
-
Step 700
700
#2F5BB7
oklch(49.2% 0.154 262.8)
-
Step 800
800
#274A94
oklch(42.6% 0.129 263)
-
Step 900
900
#243F76
oklch(37.7% 0.1 262.9)
-
Step 950
950
#152545
oklch(26.9% 0.064 262.8)
#3565CA 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) | #2871CE | 0.031 |
| Deuteranopia (no green cones) | #0063C8 | 0.028 |
| Tritanopia (no blue cones) | #007D8E | 0.131 |
| Achromatopsia (no color) | #6A6A6A | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3565CA
#3565CA
oklch(53% 0.166 262.9)
- #8A6500
#8A6500
oklch(53% 0.109 83.3)
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 #3565CA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.039
- Mid Blue #276AB3 ΔE 0.042
- Warm Blue #4B57DB ΔE 0.047
- French Blue #436BAD ΔE 0.052
- Windows Blue #3778BF ΔE 0.057
- Neon Blue #4361EE ΔE 0.058
- Iris #6258C4 ΔE 0.059
- Cerulean Blue #056EEE ΔE 0.059
Use #3565CA 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.