#5664F1
Closest named color: Neon Blue (#4361EE). oklch(57.4% 0.209 273.5), rgb(86, 100, 241).
Aa
White text reads best on this color (4.67:1).
About this color
#5664F1 is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.209 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Neon Blue (#4361EE), ΔE 0.025 away. White text reads best on it, at 4.67:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.209) |
| Temperature | cool |
| Nearest name | Neon Blue (#4361EE) |
| Black text | 4.48:1 |
| White text | 4.67:1 |
Values
| HEX | #5664F1 |
| RGB | rgb(86, 100, 241) |
| HSL | hsl(235, 85%, 64%) |
| OKLCH | oklch(57.4% 0.209 273.5) |
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 #5664F1 | 4.67:1 | AA | Lc -77.5 | Fine for body text |
| Black text on #5664F1 | 4.48:1 | AA large text | Lc 32.1 | Non-text elements, placeholder text |
| #5664F1 text on white | 4.67:1 | AA | Lc 72.0 | Content text, not long reading |
| #5664F1 text on black | 4.48:1 | AA large text | Lc -29.7 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E4E9FD
oklch(93.6% 0.028 274.7)
-
Step 200
200
#CED7FD
oklch(88.4% 0.053 274.8)
-
Step 300
300
#ADBDFE
oklch(81% 0.094 273.5)
-
Step 400
400
#8397FE
oklch(70.6% 0.152 273.6)
-
Step 500
500
#677AFC
oklch(63.2% 0.193 273.3)
-
Step 600
600 (this color)
#5664F1
oklch(57.4% 0.209 273.5)
-
Step 700
700
#434CCC
oklch(49% 0.195 273.6)
-
Step 800
800
#3740A5
oklch(42.8% 0.161 273.6)
-
Step 900
900
#2E3883
oklch(37.8% 0.125 273.1)
-
Step 950
950
#1B214D
oklch(27% 0.081 273.9)
#5664F1 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) | #007BF6 | 0.067 |
| Deuteranopia (no green cones) | #006DEE | 0.057 |
| Tritanopia (no blue cones) | #0087A1 | 0.174 |
| Achromatopsia (no color) | #747474 | 0.210 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5664F1
#5664F1
oklch(57.4% 0.209 273.5)
- #907600
#907600
oklch(57.4% 0.118 93.5)
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 #5664F1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Neon Blue #4361EE ΔE 0.025
- Royal Blue #4169E1 ΔE 0.035
- Warm Blue #4B57DB ΔE 0.048
- Dark Periwinkle #665FD1 ΔE 0.053
- Medium Slate Blue #7B68EE ΔE 0.054
- Cerulean Blue #056EEE ΔE 0.056
- Azul #1D5DEC ΔE 0.059
- Bright Blue #0165FC ΔE 0.059
Use #5664F1 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.