#3475E5
Closest named color: Royal Blue (#4169E1). oklch(58.2% 0.183 260.5), rgb(52, 117, 229).
Aa
Black text reads best on this color (4.82:1).
About this color
#3475E5 is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.183 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.030 away. Black text reads best on it, at 4.82:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.183) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.82:1 |
| White text | 4.35:1 |
Values
| HEX | #3475E5 |
| RGB | rgb(52, 117, 229) |
| HSL | hsl(218, 77%, 55%) |
| OKLCH | oklch(58.2% 0.183 260.5) |
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 #3475E5 | 4.35:1 | AA large text | Lc -75.2 | Fine for body text |
| Black text on #3475E5 | 4.82:1 | AA | Lc 34.4 | Non-text elements, placeholder text |
| #3475E5 text on white | 4.35:1 | AA large text | Lc 69.7 | Content text, not long reading |
| #3475E5 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFA
oklch(93.5% 0.024 262.1)
-
Step 200
200
#C8DAF8
oklch(88.4% 0.046 260.7)
-
Step 300
300
#A2C2F6
oklch(80.9% 0.082 260)
-
Step 400
400
#70A0F2
oklch(70.7% 0.132 260.6)
-
Step 500
500
#4A86EE
oklch(63.2% 0.169 260.6)
-
Step 600
600 (this color)
#3475E5
oklch(58.2% 0.183 260.5)
-
Step 700
700
#1F5ABF
oklch(49.1% 0.17 260.6)
-
Step 800
800
#1C4A9A
oklch(42.6% 0.14 260.7)
-
Step 900
900
#1C3F7B
oklch(37.7% 0.11 260.4)
-
Step 950
950
#112548
oklch(26.9% 0.07 260.7)
#3475E5 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) | #3282E9 | 0.033 |
| Deuteranopia (no green cones) | #0071E3 | 0.026 |
| Tritanopia (no blue cones) | #0090A2 | 0.142 |
| Achromatopsia (no color) | #797979 | 0.183 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3475E5
#3475E5
oklch(58.2% 0.183 260.5)
- #9F7200
#9F7200
oklch(58.2% 0.12 81.1)
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 #3475E5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.030
- Cerulean Blue #056EEE ΔE 0.033
- Clear Blue #247AFD ΔE 0.037
- Neon Blue #4361EE ΔE 0.050
- Bright Blue #0165FC ΔE 0.060
- Windows Blue #3778BF ΔE 0.060
- Azul #1D5DEC ΔE 0.065
- Cornflower #6A79F7 ΔE 0.065
Use #3475E5 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.