#345373
Closest named color: YInMn Blue (#415A77). oklch(43.3% 0.065 250.3), rgb(52, 83, 115).
Aa
White text reads best on this color (7.98:1).
About this color
#345373 is a dark, muted blue. In OKLCH its lightness is 43%, its chroma 0.065 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.029 away. White text reads best on it, at 7.98:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.63:1 |
| White text | 7.98:1 |
Values
| HEX | #345373 |
| RGB | rgb(52, 83, 115) |
| HSL | hsl(210, 38%, 33%) |
| OKLCH | oklch(43.3% 0.065 250.3) |
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 #345373 | 7.98:1 | AAA | Lc -92.3 | Preferred for body text |
| Black text on #345373 | 2.63:1 | Fails | Lc 16.4 | Dividers and decoration only |
| #345373 text on white | 7.98:1 | AAA | Lc 87.6 | Fine for body text |
| #345373 text on black | 2.63:1 | Fails | Lc -14.6 | Not readable |
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 800.
-
Step 50
50
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EBF1
oklch(93.7% 0.01 247.9)
-
Step 200
200
#CFDBE7
oklch(88.6% 0.021 248.1)
-
Step 300
300
#AFC3D9
oklch(80.9% 0.038 250.8)
-
Step 400
400
#84A4C6
oklch(70.7% 0.061 250.2)
-
Step 500
500
#658DB7
oklch(63.1% 0.078 250.3)
-
Step 600
600
#4C77A3
oklch(55.7% 0.084 250.1)
-
Step 700
700
#3D648C
oklch(49.2% 0.078 250.3)
-
Step 800
800 (this color)
#345373
oklch(43.3% 0.065 250.3)
-
Step 900
900
#2C445C
oklch(37.8% 0.051 249.3)
-
Step 950
950
#1A2836
oklch(27.1% 0.032 249.1)
#345373 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) | #465474 | 0.024 |
| Deuteranopia (no green cones) | #3E4E72 | 0.018 |
| Tritanopia (no blue cones) | #125A5E | 0.055 |
| Achromatopsia (no color) | #515151 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #345373
#345373
oklch(43.3% 0.065 250.3)
- #674A26
#674A26
oklch(43.2% 0.065 70.6)
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 #345373, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.029
- Light Navy Blue #2E5A88 ΔE 0.036
- Deep Sea Blue #015482 ΔE 0.039
- Light Navy #155084 ΔE 0.041
- Dusk #4E5481 ΔE 0.044
- Dusk Blue #26538D ΔE 0.045
- Dusty Grape #545775 ΔE 0.047
- Petrol #005F6A ΔE 0.053
Use #345373 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.