#5163DC
Closest named color: Royal Blue (#4169E1). oklch(55.3% 0.184 272.5), rgb(81, 99, 220).
Aa
White text reads best on this color (5.03:1).
About this color
#5163DC is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.184 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.021 away. White text reads best on it, at 5.03:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.184) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.16:1 |
| White text | 5.03:1 |
Values
| HEX | #5163DC |
| RGB | rgb(81, 99, 220) |
| HSL | hsl(232, 67%, 59%) |
| OKLCH | oklch(55.3% 0.184 272.5) |
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 #5163DC | 5.03:1 | AA | Lc -79.8 | Fine for body text |
| Black text on #5163DC | 4.16:1 | AA large text | Lc 29.7 | Dividers and decoration only |
| #5163DC text on white | 5.03:1 | AA | Lc 74.4 | Content text, not long reading |
| #5163DC text on black | 4.16:1 | AA large text | Lc -27.3 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CED8F8
oklch(88.5% 0.045 271.7)
-
Step 300
300
#AEBEF7
oklch(80.9% 0.083 272.3)
-
Step 400
400
#859AF3
oklch(70.7% 0.132 272.5)
-
Step 500
500
#687EEF
oklch(63.1% 0.17 272.4)
-
Step 600
600 (this color)
#5163DC
oklch(55.3% 0.184 272.5)
-
Step 700
700
#4352C0
oklch(49.1% 0.172 272.5)
-
Step 800
800
#37449B
oklch(42.7% 0.142 272.5)
-
Step 900
900
#2F3A7B
oklch(37.6% 0.11 272.8)
-
Step 950
950
#1B2348
oklch(27% 0.069 271.9)
#5163DC 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) | #0075E0 | 0.060 |
| Deuteranopia (no green cones) | #0069DA | 0.053 |
| Tritanopia (no blue cones) | #008096 | 0.155 |
| Achromatopsia (no color) | #6F6F6F | 0.185 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5163DC
#5163DC
oklch(55.3% 0.184 272.5)
- #8A7000
#8A7000
oklch(55.4% 0.113 92.7)
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 #5163DC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.021
- Warm Blue #4B57DB ΔE 0.030
- Neon Blue #4361EE ΔE 0.032
- Dark Periwinkle #665FD1 ΔE 0.033
- Slate Blue #6A5ACD ΔE 0.043
- Light Indigo #6D5ACF ΔE 0.046
- Iris #6258C4 ΔE 0.047
- Azul #1D5DEC ΔE 0.056
Use #5163DC 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.