#5661EB
Closest named color: Neon Blue (#4361EE). oklch(56.4% 0.205 274.3), rgb(86, 97, 235).
Aa
White text reads best on this color (4.87:1).
About this color
#5661EB is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.205 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Neon Blue (#4361EE), ΔE 0.023 away. White text reads best on it, at 4.87:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.205) |
| Temperature | cool |
| Nearest name | Neon Blue (#4361EE) |
| Black text | 4.30:1 |
| White text | 4.87:1 |
Values
| HEX | #5661EB |
| RGB | rgb(86, 97, 235) |
| HSL | hsl(236, 79%, 63%) |
| OKLCH | oklch(56.4% 0.205 274.3) |
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 #5661EB | 4.87:1 | AA | Lc -78.8 | Fine for body text |
| Black text on #5661EB | 4.30:1 | AA large text | Lc 30.7 | Non-text elements, placeholder text |
| #5661EB text on white | 4.87:1 | AA | Lc 73.3 | Content text, not long reading |
| #5661EB text on black | 4.30:1 | AA large text | Lc -28.4 | 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
#CED7FC
oklch(88.4% 0.052 274.5)
-
Step 300
300
#AEBDFD
oklch(81% 0.092 274)
-
Step 400
400
#8597FC
oklch(70.6% 0.149 274.3)
-
Step 500
500
#6A7AF9
oklch(63.2% 0.188 274.3)
-
Step 600
600 (this color)
#5661EB
oklch(56.4% 0.205 274.3)
-
Step 700
700
#454DCA
oklch(49.1% 0.191 274.2)
-
Step 800
800
#3840A3
oklch(42.7% 0.158 274.1)
-
Step 900
900
#303881
oklch(37.8% 0.122 274.3)
-
Step 950
950
#1C214C
oklch(27% 0.079 274.8)
#5661EB 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) | #0078F0 | 0.069 |
| Deuteranopia (no green cones) | #006BE8 | 0.059 |
| Tritanopia (no blue cones) | #00839D | 0.171 |
| Achromatopsia (no color) | #717171 | 0.206 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5661EB
#5661EB
oklch(56.4% 0.205 274.3)
- #8C7300
#8C7300
oklch(56.3% 0.115 93.7)
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 #5661EB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Neon Blue #4361EE ΔE 0.023
- Royal Blue #4169E1 ΔE 0.032
- Warm Blue #4B57DB ΔE 0.038
- Dark Periwinkle #665FD1 ΔE 0.045
- Light Indigo #6D5ACF ΔE 0.054
- Slate Blue #6A5ACD ΔE 0.054
- Azul #1D5DEC ΔE 0.055
- Medium Slate Blue #7B68EE ΔE 0.058
Use #5661EB 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.