#5966F8
Closest named color: Neon Blue (#4361EE). oklch(58.4% 0.215 273.8), rgb(89, 102, 248).
Aa
Black text reads best on this color (4.68:1).
About this color
#5966F8 is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.215 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Neon Blue (#4361EE), ΔE 0.034 away. Black text reads best on it, at 4.68:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.215) |
| Temperature | cool |
| Nearest name | Neon Blue (#4361EE) |
| Black text | 4.68:1 |
| White text | 4.48:1 |
Values
| HEX | #5966F8 |
| RGB | rgb(89, 102, 248) |
| HSL | hsl(235, 92%, 66%) |
| OKLCH | oklch(58.4% 0.215 273.8) |
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 #5966F8 | 4.48:1 | AA large text | Lc -76.1 | Fine for body text |
| Black text on #5966F8 | 4.68:1 | AA | Lc 33.4 | Non-text elements, placeholder text |
| #5966F8 text on white | 4.48:1 | AA large text | Lc 70.6 | Content text, not long reading |
| #5966F8 text on black | 4.68:1 | AA | Lc -31.0 | Non-text elements, placeholder text |
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
#CDD7FE
oklch(88.4% 0.055 273.9)
-
Step 300
300
#ADBDFF
oklch(81% 0.095 273.6)
-
Step 400
400
#8397FF
oklch(70.7% 0.153 273.6)
-
Step 500
500
#6778FF
oklch(63% 0.199 273.8)
-
Step 600
600 (this color)
#5966F8
oklch(58.4% 0.215 273.8)
-
Step 700
700
#434BCF
oklch(49.1% 0.2 273.7)
-
Step 800
800
#373FA7
oklch(42.8% 0.165 273.7)
-
Step 900
900
#2E3785
oklch(37.7% 0.13 273.5)
-
Step 950
950
#1B214E
oklch(27.1% 0.082 273.9)
#5966F8 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) | #007EFD | 0.070 |
| Deuteranopia (no green cones) | #0070F5 | 0.059 |
| Tritanopia (no blue cones) | #008AA5 | 0.179 |
| Achromatopsia (no color) | #777777 | 0.216 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5966F8
#5966F8
oklch(58.4% 0.215 273.8)
- #937900
#937900
oklch(58.4% 0.12 93.8)
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 #5966F8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Neon Blue #4361EE ΔE 0.034
- Royal Blue #4169E1 ΔE 0.045
- Medium Slate Blue #7B68EE ΔE 0.051
- Cornflower #6A79F7 ΔE 0.053
- Clear Blue #247AFD ΔE 0.058
- Warm Blue #4B57DB ΔE 0.060
- Cerulean Blue #056EEE ΔE 0.060
- Bright Blue #0165FC ΔE 0.062
Use #5966F8 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.