#5153FF
Closest named color: Neon Blue (#4361EE). oklch(55.5% 0.247 274.3), rgb(81, 83, 255).
Aa
White text reads best on this color (5.20:1).
About this color
#5153FF is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.247 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Neon Blue (#4361EE), ΔE 0.039 away. White text reads best on it, at 5.20:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.247) |
| Temperature | cool |
| Nearest name | Neon Blue (#4361EE) |
| Black text | 4.03:1 |
| White text | 5.20:1 |
Values
| HEX | #5153FF |
| RGB | rgb(81, 83, 255) |
| HSL | hsl(239, 100%, 66%) |
| OKLCH | oklch(55.5% 0.247 274.3) |
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 #5153FF | 5.20:1 | AA | Lc -80.4 | Fine for body text |
| Black text on #5153FF | 4.03:1 | AA large text | Lc 29.0 | Dividers and decoration only |
| #5153FF text on white | 5.20:1 | AA | Lc 75.0 | Fine for body text |
| #5153FF text on black | 4.03:1 | AA large text | Lc -26.7 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E3E9FF
oklch(93.6% 0.03 273.6)
-
Step 200
200
#CDD7FF
oklch(88.4% 0.056 274.2)
-
Step 300
300
#ADBCFF
oklch(80.8% 0.096 274.3)
-
Step 400
400
#8497FF
oklch(70.7% 0.153 274)
-
Step 500
500
#6878FF
oklch(63.1% 0.199 274.1)
-
Step 600
600 (this color)
#5153FF
oklch(55.5% 0.247 274.3)
-
Step 700
700
#4342DF
oklch(49.1% 0.23 274.2)
-
Step 800
800
#3638B4
oklch(42.7% 0.19 274.1)
-
Step 900
900
#2E338E
oklch(37.7% 0.148 274.4)
-
Step 950
950
#1A1F53
oklch(27% 0.094 274.1)
#5153FF 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) | #0075FF | 0.079 |
| Deuteranopia (no green cones) | #0064FC | 0.057 |
| Tritanopia (no blue cones) | #0082A3 | 0.198 |
| Achromatopsia (no color) | #6D6D6D | 0.248 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5153FF
#5153FF
oklch(55.5% 0.247 274.3)
- #897100
#897100
oklch(55.5% 0.114 94.1)
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 #5153FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Neon Blue #4361EE ΔE 0.039
- Warm Blue #4B57DB ΔE 0.056
- Azul #1D5DEC ΔE 0.056
- Bright Blue #0165FC ΔE 0.058
- Electric Blue #0652FF ΔE 0.058
- Royal Blue #4169E1 ΔE 0.066
- Purpley Blue #5F34E7 ΔE 0.067
- Light Royal Blue #3A2EFE ΔE 0.072
Use #5153FF 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.