#3365EA
Closest named color: Neon Blue (#4361EE). oklch(55.3% 0.208 264.7), rgb(51, 101, 234).
Aa
White text reads best on this color (5.01:1).
About this color
#3365EA is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.208 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Neon Blue (#4361EE), ΔE 0.017 away. White text reads best on it, at 5.01:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.208) |
| Temperature | cool |
| Nearest name | Neon Blue (#4361EE) |
| Black text | 4.19:1 |
| White text | 5.01:1 |
Values
| HEX | #3365EA |
| RGB | rgb(51, 101, 234) |
| HSL | hsl(224, 81%, 56%) |
| OKLCH | oklch(55.3% 0.208 264.7) |
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 #3365EA | 5.01:1 | AA | Lc -79.4 | Fine for body text |
| Black text on #3365EA | 4.19:1 | AA large text | Lc 30.0 | Non-text elements, placeholder text |
| #3365EA text on white | 5.01:1 | AA | Lc 74.0 | Content text, not long reading |
| #3365EA text on black | 4.19:1 | AA large text | Lc -27.7 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E1EAFD
oklch(93.6% 0.028 265.4)
-
Step 200
200
#C8D9FD
oklch(88.4% 0.053 265.3)
-
Step 300
300
#A3C0FE
oklch(80.9% 0.094 265)
-
Step 400
400
#729DFE
oklch(70.8% 0.15 264.8)
-
Step 500
500
#4E80FC
oklch(63% 0.193 264.9)
-
Step 600
600 (this color)
#3365EA
oklch(55.3% 0.208 264.7)
-
Step 700
700
#2753CC
oklch(49% 0.194 264.8)
-
Step 800
800
#2145A5
oklch(42.6% 0.161 264.7)
-
Step 900
900
#1F3C83
oklch(37.8% 0.125 264.4)
-
Step 950
950
#13244D
oklch(27.2% 0.079 264.7)
#3365EA 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) | #0078EF | 0.046 |
| Deuteranopia (no green cones) | #0067E7 | 0.023 |
| Tritanopia (no blue cones) | #00869E | 0.161 |
| Achromatopsia (no color) | #6F6F6F | 0.209 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3365EA
#3365EA
oklch(55.3% 0.208 264.7)
- #916C00
#916C00
oklch(55.4% 0.113 84.8)
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 #3365EA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Neon Blue #4361EE ΔE 0.017
- Royal Blue #4169E1 ΔE 0.022
- Cerulean Blue #056EEE ΔE 0.026
- Azul #1D5DEC ΔE 0.026
- Bright Blue #0165FC ΔE 0.034
- Warm Blue #4B57DB ΔE 0.042
- Clear Blue #247AFD ΔE 0.056
- Electric Blue #0652FF ΔE 0.060
Use #3365EA 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.