#4663D4
Closest named color: Royal Blue (#4169E1). oklch(54.1% 0.177 268.9), rgb(70, 99, 212).
Aa
White text reads best on this color (5.25:1).
About this color
#4663D4 is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.177 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.024 away. White text reads best on it, at 5.25:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.177) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 3.99:1 |
| White text | 5.25:1 |
Values
| HEX | #4663D4 |
| RGB | rgb(70, 99, 212) |
| HSL | hsl(228, 62%, 55%) |
| OKLCH | oklch(54.1% 0.177 268.9) |
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 #4663D4 | 5.25:1 | AA | Lc -81.1 | Fine for body text |
| Black text on #4663D4 | 3.99:1 | AA large text | Lc 28.4 | Dividers and decoration only |
| #4663D4 text on white | 5.25:1 | AA | Lc 75.7 | Fine for body text |
| #4663D4 text on black | 3.99:1 | AA large text | Lc -26.0 | 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
#CDD9F7
oklch(88.6% 0.043 268.2)
-
Step 300
300
#ABBFF5
oklch(80.9% 0.08 268.8)
-
Step 400
400
#809CF0
oklch(70.7% 0.127 269)
-
Step 500
500
#6281EB
oklch(63.1% 0.163 269.1)
-
Step 600
600 (this color)
#4663D4
oklch(54.1% 0.177 268.9)
-
Step 700
700
#3C56BC
oklch(49.2% 0.163 268.9)
-
Step 800
800
#314798
oklch(42.7% 0.135 268.7)
-
Step 900
900
#2B3C79
oklch(37.7% 0.106 269.1)
-
Step 950
950
#192447
oklch(27.1% 0.067 268.5)
#4663D4 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) | #1173D8 | 0.048 |
| Deuteranopia (no green cones) | #0066D2 | 0.042 |
| Tritanopia (no blue cones) | #007E92 | 0.145 |
| Achromatopsia (no color) | #6C6C6C | 0.177 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4663D4
#4663D4
oklch(54.1% 0.177 268.9)
- #896A00
#896A00
oklch(54% 0.11 88.4)
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 #4663D4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.024
- Warm Blue #4B57DB ΔE 0.030
- Neon Blue #4361EE ΔE 0.040
- Dark Periwinkle #665FD1 ΔE 0.042
- Iris #6258C4 ΔE 0.047
- Slate Blue #6A5ACD ΔE 0.051
- Azul #1D5DEC ΔE 0.053
- Light Indigo #6D5ACF ΔE 0.054
Use #4663D4 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.