#3565BF
Closest named color: Mid Blue (#276AB3). oklch(52.2% 0.151 261.6), rgb(53, 101, 191).
Aa
White text reads best on this color (5.57:1).
About this color
#3565BF is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.151 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.027 away. White text reads best on it, at 5.57:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.151) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.76:1 |
| White text | 5.57:1 |
Values
| HEX | #3565BF |
| RGB | rgb(53, 101, 191) |
| HSL | hsl(219, 57%, 48%) |
| OKLCH | oklch(52.2% 0.151 261.6) |
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 #3565BF | 5.57:1 | AA | Lc -82.8 | Fine for body text |
| Black text on #3565BF | 3.76:1 | AA large text | Lc 26.6 | Dividers and decoration only |
| #3565BF text on white | 5.57:1 | AA | Lc 77.5 | Fine for body text |
| #3565BF text on black | 3.76:1 | AA large text | Lc -24.3 | 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 700.
-
Step 50
50
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF8
oklch(93.5% 0.021 261.8)
-
Step 200
200
#CBDAF5
oklch(88.6% 0.041 262.3)
-
Step 300
300
#A7C2F1
oklch(81% 0.073 261.4)
-
Step 400
400
#78A0E9
oklch(70.7% 0.116 261.9)
-
Step 500
500
#5587E3
oklch(63.2% 0.149 261.6)
-
Step 600
600
#3A6ED1
oklch(55.6% 0.163 261.8)
-
Step 700
700 (this color)
#3565BF
oklch(52.2% 0.151 261.6)
-
Step 800
800
#264B92
oklch(42.6% 0.125 261.9)
-
Step 900
900
#234075
oklch(37.8% 0.097 261.4)
-
Step 950
950
#152644
oklch(27.1% 0.061 261)
#3565BF 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) | #356FC2 | 0.027 |
| Deuteranopia (no green cones) | #1362BD | 0.025 |
| Tritanopia (no blue cones) | #007A89 | 0.119 |
| Achromatopsia (no color) | #686868 | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3565BF
#3565BF
oklch(52.2% 0.151 261.6)
- #886200
#886200
oklch(52.2% 0.108 82)
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 #3565BF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.027
- French Blue #436BAD ΔE 0.038
- Windows Blue #3778BF ΔE 0.053
- Royal Blue #4169E1 ΔE 0.055
- Flat Blue #3C73A8 ΔE 0.059
- Warm Blue #4B57DB ΔE 0.060
- Iris #6258C4 ΔE 0.061
- Muted Blue #3B719F ΔE 0.067
Use #3565BF 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.