#4165DE
Closest named color: Royal Blue (#4169E1). oklch(55% 0.189 267.3), rgb(65, 101, 222).
Aa
White text reads best on this color (5.07:1).
About this color
#4165DE is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.189 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.011 away. White text reads best on it, at 5.07:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.189) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.14:1 |
| White text | 5.07:1 |
Values
| HEX | #4165DE |
| RGB | rgb(65, 101, 222) |
| HSL | hsl(226, 70%, 56%) |
| OKLCH | oklch(55% 0.189 267.3) |
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 #4165DE | 5.07:1 | AA | Lc -80.0 | Fine for body text |
| Black text on #4165DE | 4.14:1 | AA large text | Lc 29.5 | Dividers and decoration only |
| #4165DE text on white | 5.07:1 | AA | Lc 74.6 | Content text, not long reading |
| #4165DE text on black | 4.14:1 | AA large text | Lc -27.2 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#CBD9F9
oklch(88.5% 0.047 266.7)
-
Step 300
300
#A8BFF9
oklch(80.8% 0.086 267.7)
-
Step 400
400
#7B9CF5
oklch(70.6% 0.136 267.5)
-
Step 500
500
#5B81F2
oklch(63.2% 0.174 267.3)
-
Step 600
600 (this color)
#4165DE
oklch(55% 0.189 267.3)
-
Step 700
700
#3555C3
oklch(49.2% 0.176 267.2)
-
Step 800
800
#2C469D
oklch(42.7% 0.145 267.3)
-
Step 900
900
#273C7D
oklch(37.7% 0.113 267.3)
-
Step 950
950
#172449
oklch(27.1% 0.071 267.1)
#4165DE 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) | #0076E2 | 0.048 |
| Deuteranopia (no green cones) | #0067DC | 0.036 |
| Tritanopia (no blue cones) | #008298 | 0.151 |
| Achromatopsia (no color) | #6E6E6E | 0.189 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4165DE
#4165DE
oklch(55% 0.189 267.3)
- #8D6C00
#8D6C00
oklch(54.9% 0.112 87.4)
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 #4165DE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.011
- Neon Blue #4361EE ΔE 0.026
- Warm Blue #4B57DB ΔE 0.033
- Cerulean Blue #056EEE ΔE 0.041
- Azul #1D5DEC ΔE 0.042
- Dark Periwinkle #665FD1 ΔE 0.050
- Bright Blue #0165FC ΔE 0.055
- Slate Blue #6A5ACD ΔE 0.060
Use #4165DE 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.