#3F68D4
Closest named color: Royal Blue (#4169E1). oklch(54.7% 0.173 265.4), rgb(63, 104, 212).
Aa
White text reads best on this color (5.06:1).
About this color
#3F68D4 is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.173 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.020 away. White text reads best on it, at 5.06:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.173) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.14:1 |
| White text | 5.06:1 |
Values
| HEX | #3F68D4 |
| RGB | rgb(63, 104, 212) |
| HSL | hsl(223, 63%, 54%) |
| OKLCH | oklch(54.7% 0.173 265.4) |
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 #3F68D4 | 5.06:1 | AA | Lc -80.0 | Fine for body text |
| Black text on #3F68D4 | 4.14:1 | AA large text | Lc 29.5 | Dividers and decoration only |
| #3F68D4 text on white | 5.06:1 | AA | Lc 74.6 | Content text, not long reading |
| #3F68D4 text on black | 4.14:1 | AA large text | Lc -27.1 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CBD9F7
oklch(88.4% 0.044 265.6)
-
Step 300
300
#A9C0F4
oklch(80.9% 0.078 266.1)
-
Step 400
400
#7B9EEE
oklch(70.7% 0.124 265.4)
-
Step 500
500
#5A84E9
oklch(63.2% 0.159 265.2)
-
Step 600
600 (this color)
#3F68D4
oklch(54.7% 0.173 265.4)
-
Step 700
700
#3458BA
oklch(49% 0.16 265.6)
-
Step 800
800
#2B4997
oklch(42.8% 0.133 265.3)
-
Step 900
900
#263E78
oklch(37.7% 0.103 265)
-
Step 950
950
#172546
oklch(27.1% 0.064 265.1)
#3F68D4 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) | #2576D8 | 0.037 |
| Deuteranopia (no green cones) | #0068D2 | 0.034 |
| Tritanopia (no blue cones) | #008294 | 0.140 |
| Achromatopsia (no color) | #6E6E6E | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F68D4
#3F68D4
oklch(54.7% 0.173 265.4)
- #8E6B00
#8E6B00
oklch(54.8% 0.112 85.9)
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 #3F68D4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.020
- Warm Blue #4B57DB ΔE 0.043
- Neon Blue #4361EE ΔE 0.044
- Cerulean Blue #056EEE ΔE 0.048
- Dark Periwinkle #665FD1 ΔE 0.050
- Azul #1D5DEC ΔE 0.055
- Iris #6258C4 ΔE 0.057
- Mid Blue #276AB3 ΔE 0.057
Use #3F68D4 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.