#345BE9
Closest named color: Azul (#1D5DEC). oklch(53.4% 0.219 266.7), rgb(52, 91, 233).
Aa
White text reads best on this color (5.49:1).
About this color
#345BE9 is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.219 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Azul (#1D5DEC), ΔE 0.016 away. White text reads best on it, at 5.49:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.219) |
| Temperature | cool |
| Nearest name | Azul (#1D5DEC) |
| Black text | 3.81:1 |
| White text | 5.49:1 |
Values
| HEX | #345BE9 |
| RGB | rgb(52, 91, 233) |
| HSL | hsl(227, 80%, 56%) |
| OKLCH | oklch(53.4% 0.219 266.7) |
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 #345BE9 | 5.49:1 | AA | Lc -82.1 | Fine for body text |
| Black text on #345BE9 | 3.81:1 | AA large text | Lc 27.3 | Dividers and decoration only |
| #345BE9 text on white | 5.49:1 | AA | Lc 76.8 | Fine for body text |
| #345BE9 text on black | 3.81:1 | 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
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFE
oklch(93.6% 0.029 266.4)
-
Step 200
200
#C9D9FE
oklch(88.5% 0.054 266.8)
-
Step 300
300
#A5BFFF
oklch(80.9% 0.095 267.2)
-
Step 400
400
#759BFF
oklch(70.6% 0.153 266.8)
-
Step 500
500
#537EFF
oklch(63.1% 0.197 266.8)
-
Step 600
600 (this color)
#345BE9
oklch(53.4% 0.219 266.7)
-
Step 700
700
#2D50D2
oklch(49.2% 0.204 266.8)
-
Step 800
800
#2543A9
oklch(42.7% 0.167 266.5)
-
Step 900
900
#223A86
oklch(37.8% 0.131 266.7)
-
Step 950
950
#14234E
oklch(27.1% 0.082 266.5)
#345BE9 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) | #0072EE | 0.054 |
| Deuteranopia (no green cones) | #0061E6 | 0.026 |
| Tritanopia (no blue cones) | #008099 | 0.172 |
| Achromatopsia (no color) | #696969 | 0.219 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #345BE9
#345BE9
oklch(53.4% 0.219 266.7)
- #886800
#886800
oklch(53.5% 0.109 87.3)
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 #345BE9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azul #1D5DEC ΔE 0.016
- Neon Blue #4361EE ΔE 0.024
- Warm Blue #4B57DB ΔE 0.032
- Bright Blue #0165FC ΔE 0.039
- Royal Blue #4169E1 ΔE 0.040
- Cerulean Blue #056EEE ΔE 0.045
- Electric Blue #0652FF ΔE 0.047
- Dark Periwinkle #665FD1 ΔE 0.073
Use #345BE9 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.