#4963D9
Closest named color: Royal Blue (#4169E1). oklch(54.6% 0.183 270), rgb(73, 99, 217).
Aa
White text reads best on this color (5.15:1).
About this color
#4963D9 is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.183 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.019 away. White text reads best on it, at 5.15:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.183) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.06:1 |
| White text | 5.15:1 |
Values
| HEX | #4963D9 |
| RGB | rgb(73, 99, 217) |
| HSL | hsl(229, 65%, 57%) |
| OKLCH | oklch(54.6% 0.183 270) |
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 #4963D9 | 5.15:1 | AA | Lc -80.5 | Fine for body text |
| Black text on #4963D9 | 4.06:1 | AA large text | Lc 28.9 | Dividers and decoration only |
| #4963D9 text on white | 5.15:1 | AA | Lc 75.1 | Fine for body text |
| #4963D9 text on black | 4.06:1 | AA large text | Lc -26.6 | 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
#CDD8F8
oklch(88.4% 0.046 270.4)
-
Step 300
300
#ACBFF7
oklch(81% 0.082 270)
-
Step 400
400
#819BF3
oklch(70.7% 0.132 270.3)
-
Step 500
500
#6380EE
oklch(63.2% 0.168 270)
-
Step 600
600 (this color)
#4963D9
oklch(54.6% 0.183 270)
-
Step 700
700
#3D54BF
oklch(49.1% 0.169 269.9)
-
Step 800
800
#32459B
oklch(42.6% 0.142 270)
-
Step 900
900
#2C3B7B
oklch(37.7% 0.11 270.4)
-
Step 950
950
#192348
oklch(26.9% 0.07 269.8)
#4963D9 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) | #0074DD | 0.053 |
| Deuteranopia (no green cones) | #0067D7 | 0.044 |
| Tritanopia (no blue cones) | #007F94 | 0.150 |
| Achromatopsia (no color) | #6D6D6D | 0.183 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4963D9
#4963D9
oklch(54.6% 0.183 270)
- #8A6C00
#8A6C00
oklch(54.5% 0.111 89.4)
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 #4963D9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.019
- Warm Blue #4B57DB ΔE 0.028
- Neon Blue #4361EE ΔE 0.033
- Dark Periwinkle #665FD1 ΔE 0.040
- Iris #6258C4 ΔE 0.049
- Slate Blue #6A5ACD ΔE 0.049
- Azul #1D5DEC ΔE 0.051
- Cerulean Blue #056EEE ΔE 0.052
Use #4963D9 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.