#3864D2
Closest named color: Royal Blue (#4169E1). oklch(53.5% 0.177 264.6), rgb(56, 100, 210).
Aa
White text reads best on this color (5.35:1).
About this color
#3864D2 is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.177 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.028 away. White text reads best on it, at 5.35:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.177) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 3.92:1 |
| White text | 5.35:1 |
Values
| HEX | #3864D2 |
| RGB | rgb(56, 100, 210) |
| HSL | hsl(223, 63%, 52%) |
| OKLCH | oklch(53.5% 0.177 264.6) |
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 #3864D2 | 5.35:1 | AA | Lc -81.6 | Fine for body text |
| Black text on #3864D2 | 3.92:1 | AA large text | Lc 27.9 | Dividers and decoration only |
| #3864D2 text on white | 5.35:1 | AA | Lc 76.2 | Fine for body text |
| #3864D2 text on black | 3.92:1 | AA large text | Lc -25.5 | 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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAFA
oklch(93.6% 0.023 264.5)
-
Step 200
200
#CBD9F7
oklch(88.4% 0.044 265.6)
-
Step 300
300
#A7C0F5
oklch(80.8% 0.08 265)
-
Step 400
400
#799EF0
oklch(70.7% 0.128 264.9)
-
Step 500
500
#5784EB
oklch(63.2% 0.163 264.5)
-
Step 600
600 (this color)
#3864D2
oklch(53.5% 0.177 264.6)
-
Step 700
700
#3058BC
oklch(49% 0.164 264.6)
-
Step 800
800
#284998
oklch(42.7% 0.135 264.3)
-
Step 900
900
#253E79
oklch(37.8% 0.105 264.6)
-
Step 950
950
#162547
oklch(27.1% 0.066 264.5)
#3864D2 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) | #1672D6 | 0.037 |
| Deuteranopia (no green cones) | #0064D0 | 0.029 |
| Tritanopia (no blue cones) | #007F91 | 0.142 |
| Achromatopsia (no color) | #6B6B6B | 0.177 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3864D2
#3864D2
oklch(53.5% 0.177 264.6)
- #8A6700
#8A6700
oklch(53.5% 0.11 85.1)
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 #3864D2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.028
- Warm Blue #4B57DB ΔE 0.037
- Neon Blue #4361EE ΔE 0.045
- Azul #1D5DEC ΔE 0.048
- Cerulean Blue #056EEE ΔE 0.050
- Mid Blue #276AB3 ΔE 0.055
- Dark Periwinkle #665FD1 ΔE 0.056
- Iris #6258C4 ΔE 0.058
Use #3864D2 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.