#5664EC
Closest named color: Neon Blue (#4361EE). oklch(57% 0.203 273.6), rgb(86, 100, 236).
Aa
White text reads best on this color (4.74:1).
About this color
#5664EC is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.203 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Neon Blue (#4361EE), ΔE 0.024 away. White text reads best on it, at 4.74:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.203) |
| Temperature | cool |
| Nearest name | Neon Blue (#4361EE) |
| Black text | 4.42:1 |
| White text | 4.74:1 |
Values
| HEX | #5664EC |
| RGB | rgb(86, 100, 236) |
| HSL | hsl(234, 80%, 63%) |
| OKLCH | oklch(57% 0.203 273.6) |
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 #5664EC | 4.74:1 | AA | Lc -77.9 | Fine for body text |
| Black text on #5664EC | 4.42:1 | AA large text | Lc 31.6 | Non-text elements, placeholder text |
| #5664EC text on white | 4.74:1 | AA | Lc 72.5 | Content text, not long reading |
| #5664EC text on black | 4.42:1 | AA large text | Lc -29.2 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FC
oklch(93.6% 0.026 274.1)
-
Step 200
200
#CED8FC
oklch(88.6% 0.051 273.1)
-
Step 300
300
#ADBDFC
oklch(80.9% 0.091 273.2)
-
Step 400
400
#8498FB
oklch(70.7% 0.146 273.5)
-
Step 500
500
#687BF8
oklch(63.2% 0.186 273.4)
-
Step 600
600 (this color)
#5664EC
oklch(57% 0.203 273.6)
-
Step 700
700
#444EC9
oklch(49.2% 0.188 273.6)
-
Step 800
800
#3741A2
oklch(42.7% 0.155 273.4)
-
Step 900
900
#2F3881
oklch(37.7% 0.122 273.7)
-
Step 950
950
#1B224B
oklch(27% 0.076 273)
#5664EC 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) | #007AF1 | 0.067 |
| Deuteranopia (no green cones) | #006DE9 | 0.057 |
| Tritanopia (no blue cones) | #00859E | 0.170 |
| Achromatopsia (no color) | #737373 | 0.204 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5664EC
#5664EC
oklch(57% 0.203 273.6)
- #8E7500
#8E7500
oklch(57% 0.117 94)
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 #5664EC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Neon Blue #4361EE ΔE 0.024
- Royal Blue #4169E1 ΔE 0.030
- Warm Blue #4B57DB ΔE 0.043
- Dark Periwinkle #665FD1 ΔE 0.046
- Medium Slate Blue #7B68EE ΔE 0.055
- Cerulean Blue #056EEE ΔE 0.055
- Light Indigo #6D5ACF ΔE 0.056
- Slate Blue #6A5ACD ΔE 0.057
Use #5664EC 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.