#3E64D7
Closest named color: Royal Blue (#4169E1). oklch(54.1% 0.182 266.5), rgb(62, 100, 215).
Aa
White text reads best on this color (5.23:1).
About this color
#3E64D7 is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.182 and its hue 266°. 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 5.23:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.182) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.00:1 |
| White text | 5.23:1 |
Values
| HEX | #3E64D7 |
| RGB | rgb(62, 100, 215) |
| HSL | hsl(225, 66%, 54%) |
| OKLCH | oklch(54.1% 0.182 266.5) |
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 #3E64D7 | 5.23:1 | AA | Lc -80.9 | Fine for body text |
| Black text on #3E64D7 | 4.00:1 | AA large text | Lc 28.5 | Dividers and decoration only |
| #3E64D7 text on white | 5.23:1 | AA | Lc 75.6 | Fine for body text |
| #3E64D7 text on black | 4.00:1 | AA large text | Lc -26.2 | 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
#E3EAFA
oklch(93.6% 0.023 266.9)
-
Step 200
200
#CBD9F8
oklch(88.5% 0.045 266.2)
-
Step 300
300
#A8C0F6
oklch(80.9% 0.081 266)
-
Step 400
400
#7B9DF2
oklch(70.7% 0.131 266.6)
-
Step 500
500
#5B82EE
oklch(63.1% 0.168 266.7)
-
Step 600
600 (this color)
#3E64D7
oklch(54.1% 0.182 266.5)
-
Step 700
700
#3456BF
oklch(49% 0.17 266.5)
-
Step 800
800
#2B479A
oklch(42.6% 0.14 266.4)
-
Step 900
900
#273D7B
oklch(37.8% 0.109 266.5)
-
Step 950
950
#172448
oklch(27% 0.069 266.8)
#3E64D7 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) | #0774DB | 0.045 |
| Deuteranopia (no green cones) | #0065D5 | 0.034 |
| Tritanopia (no blue cones) | #008094 | 0.146 |
| Achromatopsia (no color) | #6C6C6C | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3E64D7
#3E64D7
oklch(54.1% 0.182 266.5)
- #8B6900
#8B6900
oklch(54% 0.111 86.2)
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 #3E64D7, 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 0.032
- Neon Blue #4361EE ΔE 0.037
- Azul #1D5DEC ΔE 0.045
- Cerulean Blue #056EEE ΔE 0.047
- Dark Periwinkle #665FD1 ΔE 0.050
- Iris #6258C4 ΔE 0.056
- Slate Blue #6A5ACD ΔE 0.059
Use #3E64D7 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.