#4159E9
Closest named color: Neon Blue (#4361EE). oklch(53.6% 0.218 270), rgb(65, 89, 233).
Aa
White text reads best on this color (5.48:1).
About this color
#4159E9 is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.218 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Neon Blue (#4361EE), ΔE 0.020 away. White text reads best on it, at 5.48:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.218) |
| Temperature | cool |
| Nearest name | Neon Blue (#4361EE) |
| Black text | 3.83:1 |
| White text | 5.48:1 |
Values
| HEX | #4159E9 |
| RGB | rgb(65, 89, 233) |
| HSL | hsl(231, 79%, 58%) |
| OKLCH | oklch(53.6% 0.218 270) |
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 #4159E9 | 5.48:1 | AA | Lc -82.1 | Fine for body text |
| Black text on #4159E9 | 3.83:1 | AA large text | Lc 27.3 | Dividers and decoration only |
| #4159E9 text on white | 5.48:1 | AA | Lc 76.7 | Fine for body text |
| #4159E9 text on black | 3.83:1 | AA large text | Lc -25.0 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E2E9FE
oklch(93.5% 0.029 271.1)
-
Step 200
200
#CBD8FE
oklch(88.5% 0.054 270.4)
-
Step 300
300
#A8BEFF
oklch(80.9% 0.096 269.8)
-
Step 400
400
#7C99FF
oklch(70.6% 0.153 270.2)
-
Step 500
500
#5D7CFF
oklch(63.2% 0.197 269.9)
-
Step 600
600 (this color)
#4159E9
oklch(53.6% 0.218 270)
-
Step 700
700
#384DD1
oklch(49% 0.203 270)
-
Step 800
800
#2E41A9
oklch(42.8% 0.167 269.8)
-
Step 900
900
#283886
oklch(37.7% 0.132 270.1)
-
Step 950
950
#17224E
oklch(27% 0.082 269.6)
#4159E9 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) | #0071EE | 0.059 |
| Deuteranopia (no green cones) | #0061E6 | 0.038 |
| Tritanopia (no blue cones) | #007E99 | 0.172 |
| Achromatopsia (no color) | #696969 | 0.218 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4159E9
#4159E9
oklch(53.6% 0.218 270)
- #866A00
#866A00
oklch(53.7% 0.11 90.4)
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 #4159E9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Neon Blue #4361EE ΔE 0.020
- Warm Blue #4B57DB ΔE 0.024
- Azul #1D5DEC ΔE 0.028
- Royal Blue #4169E1 ΔE 0.040
- Bright Blue #0165FC ΔE 0.048
- Cerulean Blue #056EEE ΔE 0.053
- Electric Blue #0652FF ΔE 0.054
- Dark Periwinkle #665FD1 ΔE 0.064
Use #4159E9 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.