#3863C3
Closest named color: Mid Blue (#276AB3). oklch(52.2% 0.158 263.7), rgb(56, 99, 195).
Aa
White text reads best on this color (5.61:1).
About this color
#3863C3 is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.158 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.036 away. White text reads best on it, at 5.61:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.158) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.74:1 |
| White text | 5.61:1 |
Values
| HEX | #3863C3 |
| RGB | rgb(56, 99, 195) |
| HSL | hsl(221, 55%, 49%) |
| OKLCH | oklch(52.2% 0.158 263.7) |
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 #3863C3 | 5.61:1 | AA | Lc -83.0 | Fine for body text |
| Black text on #3863C3 | 3.74:1 | AA large text | Lc 26.4 | Dividers and decoration only |
| #3863C3 text on white | 5.61:1 | AA | Lc 77.7 | Fine for body text |
| #3863C3 text on black | 3.74:1 | AA large text | Lc -24.1 | 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 700.
-
Step 50
50
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAF9
oklch(93.5% 0.022 263.2)
-
Step 200
200
#CBDAF6
oklch(88.6% 0.042 263)
-
Step 300
300
#A7C1F3
oklch(80.9% 0.077 263.3)
-
Step 400
400
#799FED
oklch(70.7% 0.122 263.8)
-
Step 500
500
#5785E7
oklch(63.1% 0.156 263.6)
-
Step 600
600
#3D6CD5
oklch(55.5% 0.17 263.7)
-
Step 700
700 (this color)
#3863C3
oklch(52.2% 0.158 263.7)
-
Step 800
800
#284A95
oklch(42.7% 0.13 263.5)
-
Step 900
900
#243E77
oklch(37.6% 0.103 263.7)
-
Step 950
950
#162546
oklch(27.1% 0.065 264.1)
#3863C3 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) | #2C6EC7 | 0.029 |
| Deuteranopia (no green cones) | #0062C1 | 0.031 |
| Tritanopia (no blue cones) | #007A8A | 0.126 |
| Achromatopsia (no color) | #686868 | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3863C3
#3863C3
oklch(52.2% 0.158 263.7)
- #876300
#876300
oklch(52.3% 0.107 83.6)
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 #3863C3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.036
- French Blue #436BAD ΔE 0.046
- Royal Blue #4169E1 ΔE 0.049
- Warm Blue #4B57DB ΔE 0.052
- Iris #6258C4 ΔE 0.056
- Windows Blue #3778BF ΔE 0.059
- Dark Periwinkle #665FD1 ΔE 0.062
- Flat Blue #3C73A8 ΔE 0.067
Use #3863C3 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.