#5161E5
Closest named color: Neon Blue (#4361EE). oklch(55.6% 0.199 272.9), rgb(81, 97, 229).
Aa
White text reads best on this color (5.01:1).
About this color
#5161E5 is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.199 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Neon Blue (#4361EE), ΔE 0.021 away. White text reads best on it, at 5.01:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.199) |
| Temperature | cool |
| Nearest name | Neon Blue (#4361EE) |
| Black text | 4.19:1 |
| White text | 5.01:1 |
Values
| HEX | #5161E5 |
| RGB | rgb(81, 97, 229) |
| HSL | hsl(234, 74%, 61%) |
| OKLCH | oklch(55.6% 0.199 272.9) |
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 #5161E5 | 5.01:1 | AA | Lc -79.6 | Fine for body text |
| Black text on #5161E5 | 4.19:1 | AA large text | Lc 29.9 | Dividers and decoration only |
| #5161E5 text on white | 5.01:1 | AA | Lc 74.2 | Content text, not long reading |
| #5161E5 text on black | 4.19:1 | AA large text | Lc -27.5 | 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
#CED8FB
oklch(88.6% 0.049 272.8)
-
Step 300
300
#ADBDFB
oklch(80.8% 0.09 273.1)
-
Step 400
400
#8399F9
oklch(70.7% 0.143 272.5)
-
Step 500
500
#677CF6
oklch(63.2% 0.182 272.8)
-
Step 600
600 (this color)
#5161E5
oklch(55.6% 0.199 272.9)
-
Step 700
700
#424FC7
oklch(49.1% 0.185 272.8)
-
Step 800
800
#3642A1
oklch(42.8% 0.153 272.7)
-
Step 900
900
#2E3980
oklch(37.7% 0.12 272.7)
-
Step 950
950
#1B224B
oklch(27% 0.076 273)
#5161E5 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) | #0076E9 | 0.063 |
| Deuteranopia (no green cones) | #0069E2 | 0.053 |
| Tritanopia (no blue cones) | #00819A | 0.164 |
| Achromatopsia (no color) | #6F6F6F | 0.199 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5161E5
#5161E5
oklch(55.6% 0.199 272.9)
- #8A7100
#8A7100
oklch(55.6% 0.114 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 #5161E5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Neon Blue #4361EE ΔE 0.021
- Royal Blue #4169E1 ΔE 0.025
- Warm Blue #4B57DB ΔE 0.029
- Dark Periwinkle #665FD1 ΔE 0.041
- Azul #1D5DEC ΔE 0.050
- Slate Blue #6A5ACD ΔE 0.051
- Light Indigo #6D5ACF ΔE 0.052
- Cerulean Blue #056EEE ΔE 0.054
Use #5161E5 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.