#4963DF
Closest named color: Royal Blue (#4169E1). oklch(55.1% 0.191 270), rgb(73, 99, 223).
Aa
White text reads best on this color (5.08:1).
About this color
#4963DF is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.191 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.015 away. White text reads best on it, at 5.08:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.191) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.13:1 |
| White text | 5.08:1 |
Values
| HEX | #4963DF |
| RGB | rgb(73, 99, 223) |
| HSL | hsl(230, 70%, 58%) |
| OKLCH | oklch(55.1% 0.191 270) |
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 #4963DF | 5.08:1 | AA | Lc -80.0 | Fine for body text |
| Black text on #4963DF | 4.13:1 | AA large text | Lc 29.4 | Dividers and decoration only |
| #4963DF text on white | 5.08:1 | AA | Lc 74.6 | Content text, not long reading |
| #4963DF text on black | 4.13:1 | 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
#E3EAFB
oklch(93.7% 0.024 267.9)
-
Step 200
200
#CDD8FA
oklch(88.5% 0.048 271.2)
-
Step 300
300
#ABBEF9
oklch(80.8% 0.086 270.6)
-
Step 400
400
#809BF6
oklch(70.8% 0.137 270.1)
-
Step 500
500
#617FF2
oklch(63.1% 0.175 269.8)
-
Step 600
600 (this color)
#4963DF
oklch(55.1% 0.191 270)
-
Step 700
700
#3C53C3
oklch(49.1% 0.176 269.9)
-
Step 800
800
#31449E
oklch(42.6% 0.148 270)
-
Step 900
900
#2B3B7D
oklch(37.7% 0.113 270)
-
Step 950
950
#192349
oklch(27% 0.072 270)
#4963DF 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) | #0075E3 | 0.054 |
| Deuteranopia (no green cones) | #0068DD | 0.044 |
| Tritanopia (no blue cones) | #008197 | 0.156 |
| Achromatopsia (no color) | #6E6E6E | 0.191 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4963DF
#4963DF
oklch(55.1% 0.191 270)
- #8B6E00
#8B6E00
oklch(55.1% 0.113 90.4)
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 #4963DF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.015
- Neon Blue #4361EE ΔE 0.024
- Warm Blue #4B57DB ΔE 0.028
- Dark Periwinkle #665FD1 ΔE 0.043
- Azul #1D5DEC ΔE 0.046
- Cerulean Blue #056EEE ΔE 0.048
- Slate Blue #6A5ACD ΔE 0.053
- Iris #6258C4 ΔE 0.055
Use #4963DF 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.