#4171EE
Closest named color: Royal Blue (#4169E1). oklch(58.5% 0.196 265), rgb(65, 113, 238).
Aa
Black text reads best on this color (4.82:1).
About this color
#4171EE is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.196 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.027 away. Black text reads best on it, at 4.82:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.196) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.82:1 |
| White text | 4.35:1 |
Values
| HEX | #4171EE |
| RGB | rgb(65, 113, 238) |
| HSL | hsl(223, 84%, 59%) |
| OKLCH | oklch(58.5% 0.196 265) |
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 #4171EE | 4.35:1 | AA large text | Lc -75.2 | Fine for body text |
| Black text on #4171EE | 4.82:1 | AA | Lc 34.4 | Non-text elements, placeholder text |
| #4171EE text on white | 4.35:1 | AA large text | Lc 69.7 | Content text, not long reading |
| #4171EE text on black | 4.82:1 | AA | Lc -32.0 | 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
#F2F6FE
oklch(97.2% 0.012 264.5)
-
Step 100
100
#E2EAFC
oklch(93.6% 0.026 266.6)
-
Step 200
200
#C9D9FA
oklch(88.4% 0.049 264.9)
-
Step 300
300
#A5C0FA
oklch(80.9% 0.088 265.1)
-
Step 400
400
#759DF8
oklch(70.6% 0.141 265)
-
Step 500
500
#5382F5
oklch(63.2% 0.18 265)
-
Step 600
600 (this color)
#4171EE
oklch(58.5% 0.196 265)
-
Step 700
700
#2C55C6
oklch(49% 0.182 265.1)
-
Step 800
800
#2547A0
oklch(42.8% 0.15 264.9)
-
Step 900
900
#223C7F
oklch(37.6% 0.118 265.2)
-
Step 950
950
#14244A
oklch(27% 0.074 264.7)
#4171EE 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) | #1381F2 | 0.042 |
| Deuteranopia (no green cones) | #0071EC | 0.032 |
| Tritanopia (no blue cones) | #008FA5 | 0.155 |
| Achromatopsia (no color) | #797979 | 0.196 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4171EE
#4171EE
oklch(58.5% 0.196 265)
- #9C7500
#9C7500
oklch(58.5% 0.12 85.2)
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 #4171EE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.027
- Clear Blue #247AFD ΔE 0.032
- Cerulean Blue #056EEE ΔE 0.034
- Neon Blue #4361EE ΔE 0.037
- Bright Blue #0165FC ΔE 0.052
- Cornflower #6A79F7 ΔE 0.054
- Azul #1D5DEC ΔE 0.060
- Warm Blue #4B57DB ΔE 0.065
Use #4171EE 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.