#345BC9
Closest named color: Warm Blue (#4B57DB). oklch(50.8% 0.177 265.6), rgb(52, 91, 201).
Aa
White text reads best on this color (6.02:1).
About this color
#345BC9 is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.177 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.039 away. White text reads best on it, at 6.02:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.177) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.48:1 |
| White text | 6.02:1 |
Values
| HEX | #345BC9 |
| RGB | rgb(52, 91, 201) |
| HSL | hsl(224, 59%, 50%) |
| OKLCH | oklch(50.8% 0.177 265.6) |
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 #345BC9 | 6.02:1 | AA | Lc -84.8 | Fine for body text |
| Black text on #345BC9 | 3.48:1 | AA large text | Lc 24.4 | Dividers and decoration only |
| #345BC9 text on white | 6.02:1 | AA | Lc 79.6 | Fine for body text |
| #345BC9 text on black | 3.48:1 | AA large text | Lc -22.2 | 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 700.
-
Step 50
50
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#CAD9FA
oklch(88.5% 0.048 266)
-
Step 300
300
#A6C0F9
oklch(80.9% 0.086 265.5)
-
Step 400
400
#789DF6
oklch(70.7% 0.137 265.9)
-
Step 500
500
#5682F2
oklch(63.1% 0.175 265.5)
-
Step 600
600
#3D68E1
oklch(55.6% 0.191 265.7)
-
Step 700
700 (this color)
#345BC9
oklch(50.8% 0.177 265.6)
-
Step 800
800
#28479E
oklch(42.8% 0.146 265.7)
-
Step 900
900
#243C7D
oklch(37.6% 0.114 265.9)
-
Step 950
950
#152449
oklch(27% 0.072 265.3)
#345BC9 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) | #006ACD | 0.041 |
| Deuteranopia (no green cones) | #005CC7 | 0.028 |
| Tritanopia (no blue cones) | #007689 | 0.140 |
| Achromatopsia (no color) | #636363 | 0.177 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #345BC9
#345BC9
oklch(50.8% 0.177 265.6)
- #806000
#806000
oklch(50.8% 0.104 85.8)
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 #345BC9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.039
- Royal Blue #4169E1 ΔE 0.053
- Azul #1D5DEC ΔE 0.055
- Mid Blue #276AB3 ΔE 0.056
- Iris #6258C4 ΔE 0.058
- Neon Blue #4361EE ΔE 0.062
- Blue Blue #2242C7 ΔE 0.064
- Dark Periwinkle #665FD1 ΔE 0.067
Use #345BC9 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.