#4663D7
Closest named color: Royal Blue (#4169E1). oklch(54.3% 0.181 269), rgb(70, 99, 215).
Aa
White text reads best on this color (5.21:1).
About this color
#4663D7 is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.181 and its hue 269°. 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 5.21:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.181) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.02:1 |
| White text | 5.21:1 |
Values
| HEX | #4663D7 |
| RGB | rgb(70, 99, 215) |
| HSL | hsl(228, 64%, 56%) |
| OKLCH | oklch(54.3% 0.181 269) |
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 #4663D7 | 5.21:1 | AA | Lc -80.8 | Fine for body text |
| Black text on #4663D7 | 4.02:1 | AA large text | Lc 28.6 | Dividers and decoration only |
| #4663D7 text on white | 5.21:1 | AA | Lc 75.5 | Fine for body text |
| #4663D7 text on black | 4.02:1 | AA large text | Lc -26.3 | 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
#CDD9F8
oklch(88.6% 0.045 268.7)
-
Step 300
300
#ABBFF6
oklch(80.9% 0.081 269)
-
Step 400
400
#7F9CF2
oklch(70.7% 0.13 268.8)
-
Step 500
500
#6181ED
oklch(63.2% 0.166 268.9)
-
Step 600
600 (this color)
#4663D7
oklch(54.3% 0.181 269)
-
Step 700
700
#3B55BE
oklch(49.1% 0.167 268.9)
-
Step 800
800
#31469A
oklch(42.7% 0.139 269.2)
-
Step 900
900
#2A3C7A
oklch(37.7% 0.108 268.6)
-
Step 950
950
#192448
oklch(27.1% 0.068 268.7)
#4663D7 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) | #0573DB | 0.049 |
| Deuteranopia (no green cones) | #0066D5 | 0.042 |
| Tritanopia (no blue cones) | #007F93 | 0.149 |
| Achromatopsia (no color) | #6C6C6C | 0.181 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4663D7
#4663D7
oklch(54.3% 0.181 269)
- #8A6B00
#8A6B00
oklch(54.3% 0.111 88.6)
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 #4663D7, 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 0.029
- Neon Blue #4361EE ΔE 0.036
- Dark Periwinkle #665FD1 ΔE 0.042
- Iris #6258C4 ΔE 0.049
- Azul #1D5DEC ΔE 0.050
- Slate Blue #6A5ACD ΔE 0.051
- Cerulean Blue #056EEE ΔE 0.052
Use #4663D7 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.